User interface operation method based on touch screen and terminal device using same

The invention provides a user interface operation method based on a touch screen and a terminal device using the same. The user interface operation method based on the touch screen comprises the steps of: determining whether a user long presses an icon in the user interface; if the user long presses the icon, displaying an auxiliary interface relating to the icon around the icon, wherein the auxiliary interface comprises at least one small icon and encircles the icon; implementing corresponding operation to the long pressed icon according to the operation of the user to the at least one small icon.

Plate-frame membrane assembly for osmotic vaporization process

The membrane assembly consists of membrane frame, membrane, support plate and washer, the first mentioned three parts coincide with one another, and the last part is between the membrane frame and the membrane. Among the said parts, the membrane frame constitutes two assembled frame boards and the support plate constitutes two porous boards and a silk screen or corrugated board in between. The plate-flame membrane assembly of the present invention makes material liquid distributed homogeneouly inside it, and it is simple in structure, easy to manufacture and low in cost.

Vacuum rectification for purifying acetone cyanhydrin

Production process of coated hollow glass

The invention discloses a production process of coated hollow glass, which comprises the following specific process steps of: cutting, cleaning and drying glass, striking out Ti particles by using a sputtering method, attaching the Ti particles to the surface of the glass to form a TiO2 metal coating, plating a nickel-chromium metal layer, and drying to obtain the coated hollow glass. A TiO2 metal coating is coated on the surface of a nickel-chromium metal layer, then a layer of Si3N4 film is coated on the surface of the nickel-chromium metal layer by a chemical deposition method, a hollow aluminum strip is bent and molded and then is loaded into a molecular sieve, an aluminum frame is sleeved on the outer sides of two pieces of laminated glass, sealant is coated on the peripheral edges of the two pieces of laminated glass, and curing is carried out, a protective film is formed by the TiO2 metal coating, the nickel-chromium metal layer and the Si3N4 film, the Si3N4 film has good acid and ...

Doped and surface coating co-modified anode material for lithium ion battery and preparation method thereof

The invention discloses a doped and surface coating co-modified anode material for a lithium ion battery and a preparation method thereof. The anode material uses doped lithium cobalt oxide as a matrix, the surface of which is coated with Co3(PO4)2, AlPO4, Mn3(PO4)2, FePO4, Ni3(PO4)2, Mg3(PO4)2 and other phosphates, therefore, the electric conductivity, the circulating performance, the high temperature and high pressure resistance and other performances are improved. The preparation method has the advantages that the coating material is uniformly coated on the surface of the anode material to be beneficial to improving the electrochemical performance; the method is simple to operate, is green and environment-friendly and has industrial applicability.

Cathode material of lithium-ion secondary battery and method for preparing same

The invention provides a cathode material of a lithium-ion secondary battery and a method for preparing the same. The cathode material is a lithium nickel cobalt oxide material doped with a boron element. The preparation method comprises the following steps of: firstly, mixing compounds containing nickel, cobalt and lithium or a mixture consisting of various compounds and compounds containing boron or a mixture consisting of various compounds containing the boron according to a ratio; secondly, pretreating the mixture at a temperature of between 300 and 600 DEG C in an air atmosphere for 1 to 10 hours; thirdly, performing high-temperature synthesis on the mixture at a temperature of between 700 and 850 DEG C in an oxygen atmosphere for 3 to 15 hours; and finally, cooling the mixture to the room temperature, and then grinding and screening the mixture to obtain the lithium nickel cobalt oxide material doped with the boron element. The cathode material has the advantages of high specific ...

Electrode material for sodium-based battery as well as preparation method and application of electrode material

The invention belongs to the technical field of battery material preparation, and particularly relates to an electrode material for a sodium-based battery as well as a preparation method and application of the electrode material. Raw materials of the electrode material for the sodium-based battery comprise a metal-based substance and a carbon source, the carbon source is carbon fiber with a three-dimensional skeleton structure, and the diameter of the carbon fiber is 1-30 microns. When the electrode material is used for the sodium-ion battery, the problem of volume expansion of an alloy negative electrode material in the sodium-ion battery in the prior art is solved, the volume change of a pole piece is reduced, and the overall stability and sodium storage performance of the battery are improved. The alloyed electrode material provided by the invention is generally used as a sodium ion battery negative electrode.

Double-backpressure circulating water heating system

The invention relates to improvement of a double-backpressure circulating water heating system. According to the double-backpressure circulating water heating system, during a heating period, a 300 MW-level turbine unit utilizes high backpressure and high exhaust temperature to heat circulating water to perform heating, a seawater circulating water system in a condenser is switched into a hot water pipe network circulating water loop constructed in a heating network circulating pump to form into a new heat-water exchanging system, after the switching, water flow enters into the condenser is reduced, the backpressure of the condenser rises, the exhaust temperature of a low-temperature cylinder rises, the temperature of the heating network circulating water rises after being heated through the condenser form the first time, the heating network circulating water is sent to an initial station heater for the heating network after being boosted through the heating network circulating pump, and ...

Plate frame type separator of permeable vaporizing membrane with heating plate

Hollow glass surface film coating device

The invention discloses a hollow glass surface film covering device which comprises a rack and a conveying roller used for conveying hollow glass, two film covering mechanisms are arranged on the rack, a vertical overturning mechanism used for overturning the hollow glass by 180 degrees is arranged between the two film covering mechanisms, and the vertical overturning mechanism is composed of two clamping overturning pieces located on the two sides of the conveying roller. The clamping and overturning part comprises a pneumatic clamping part, a fixed seat, a movable seat, a lifting driving part and an overturning driving part, the fixed seat is installed on the rack, the vertical overturning mechanism is additionally arranged between the two sets of film covering mechanisms, after one face of the hollow glass is covered with a film, the vertical overturning mechanism drives the hollow glass to overturn by 180 degrees, and then the hollow glass is overturned by 180 degrees; the hollow glass ...

Equipment and technology for preparing organic acid with bipolar film electrodialysis

Negative pole piece of sodium ion battery

The invention provides a sodium ion battery negative pole piece which comprises a current collector, a main coating area arranged in the middle position of the surface of one side or two sides of the current collector and edge coating areas arranged on two sides of the main coating area, the main coating area comprises a hard carbon material A, and the edge coating areas are arranged on two sides of the main coating area. The edge coating area comprises a hard carbon material B, the sodium removal gram volume of the hard carbon material A is greater than or equal to 280mAh/g, the compaction density of the hard carbon material A is greater than or equal to 0.95 g/cm < 3 >, and the hard carbon material B comprises a fast-charging hard carbon material, the negative pole piece solves the problem of edge sodium separation under high-rate charging of the sodium ion battery, so that the high energy density and the fast-charging capability of the sodium ion battery are both considered, and the ...

Have grass -remover of function of mowing concurrently

The utility model discloses a have grass -remover of function of mowing concurrently, including settling in the drive shaft and following the device of weeding that circular motion was made to the drive shaft, the device of weeding includes blade holder, rake teeth and cutting knife, and the blade holder is settled in the drive shaft, harrow gear position in blade holder front end, and the cutting knife setting is in blade holder side or rake teeth side. Above -mentioned grass -remover weed the device when making circular motion along with the drive shaft, the rake teeth that is located the blade holder front end can be weedd and loosened the soil, set up at the cutting knife of blade holder side or rake teeth side then can cut off the grass, simple structure, these three kinds of functions have realized mowing simultaneously, weeding very conveniently and have loosened the soil.

Board house for field work

Board house for field work relates to operation auxiliary assembly field, and including board house body, door and window, board house body bottom is provided with the sled seat, and the upper portion of board house body is provided with the lug, and one side of board house body is provided with the ladder, the inner space of board house body is falld into the bedroom at its length direction in proper order, change one's clothes between, kitchen and tool room four bibliographic categories branch, respectively be provided with a window around the bedroom, the inside bed that is provided with in bedroom, change one's clothes and be provided with the wardrobe in between, respectively be provided with a window around the kitchen, be provided with operation panel and dining table in the kitchen, a position that the door setting corresponds between changing one's clothes, the tool room is provided with the tool room door, the upper portion of tool room door is provided with the tool cabinet.

Campus security detection method based on video analysis

The invention belongs to the technical field of campus security, and discloses a campus security detection method based on video analysis, comprising a client, the client comprising a monitoring module and a behavior analysis detection module; the detection method comprises the following steps: 1, setting specific parameters of the monitoring module; 2, recording the position track and behavior of a person or an object through a monitoring module, and uploading the position track and behavior to a behavior analysis and detection module; 3, the behavior analysis and detection module analyzes whether alarm is needed or not according to the alarm rule. According to the invention, the behavior analysis and detection module analyzes whether an alarm is needed according to an alarm rule, if the alarm is needed, security personnel are directly notified, and a buzzer is used for buzzing alarm or reminding other people, so that the efficiency of security work is greatly improved; and the data processed ...

Construction dustproof device

The invention relates to the technical field of construction dust prevention, in particular to a construction dust prevention device which comprises a supporting frame and a plurality of dust screens installed on the supporting frame. The supporting frame comprises a first supporting plate and a second supporting plate, the first supporting plate and the second supporting plate are fixedly connected at an angle to form an inverted V-shaped structure, the first supporting plate and the second supporting plate are each provided with a plurality of windows where the dustproof nets can be installed, and the windows are matched with the dustproof nets; a plurality of limiting mechanisms used for limiting free movement of the dustproof net are arranged at the positions, located at the windows, of the first supporting plate and the second supporting plate. In conclusion, according to the construction dustproof device, the reciprocating mechanism and the supporting assembly are matched to facilitate ...

Negative electrode material as well as preparation method and application thereof

The invention belongs to the field of batteries. The invention provides a negative electrode material and a preparation method and application thereof, and the preparation method comprises the following steps: uniformly mixing alumina hydrate, ethanol and hard carbon, heating in a water bath, drying, and calcining to obtain the negative electrode material. According to the invention, alumina hydrate is used as a raw material, the surface of hard carbon is coated with an Al2O3 coating layer through a simple liquid-phase coating method, and the coating layer can effectively reduce the specific surface area of the hard carbon material, reduce irreversible sodium storage sites and inhibit decomposition of an electrolyte and generation of side reactions, so that the ICE of the material is improved; compared with the prior art using PVD (Physical Vapor Deposition) or ALD (Atomic Layer Deposition), the preparation method disclosed by the invention does not need expensive and precise equipment, ...

Production of oxytetracycline hydrochloride

A new process for production of oxytetracycline hydrochloride features that less water content whose boiling point is higher than that of methanol is directly separated out from the filtrate (mother liquor) obtained after decolouring or centrifugal separation, so the mother liquor will go directly to the dissolving tank for dissolving terramicine. Its technological steps include adding acidified alcohol in mother liquor containing terramicine, decolouring with activated carbon, filter, dewatering, supplement of acidified alcohol and freeze crystalline.

Plate-frame membrane assembly of osmotic vaporization process

Condenser with dual modes of heat supply and pure condensation

The invention relates to a technology of a condenser for modifying safety problems in a heat supply period and a non heat supply period, in particular to a condenser with dual modes of heat supply and pure condensation. The condenser comprises front water chambers (10), rear water chambers (20) and a circulation water pipe (30). The front water chambers (10) comprise a front left water chamber (11) and a front right water chamber (12). The rear water chambers (20) comprise a rear left water chamber (21) and a rear right water chamber (22). Lings in the front water chambers (10), the rear water chambers (20) and the circulation water pipe (30) are made of abrasion-resistant and high-temperature-resistant butyl rubber, and the linings can withstand the high temperature of 150 DEG C, so that safety operation of the condenser in the heat supply period when the temperature is far higher than that of the pure condensation condition can be ensured.

Novel automobile safety bumper

The invention discloses a novel automobile safety bumper which comprises a bumper body. The bumper body is an arc cross beam made of foamed aluminum materials. The bumper body is a hollow structure, and a safety air bag is arranged in the center core part. The two ends on one side of the bumper body are provided with fixing devices respectively, and the middle on the other side of the bumper body is provided with a protective block. Each fixing device comprises supports arranged at the two ends of the inner side of the arc cross beam, wherein fixing plates are arranged at the ends of the supports, and the fixing plates are provided with a plurality of installation holes. The protective block is a metal plate installed on the outer side of the arc cross beam and made of foamed aluminum materials. The novel automobile safety bumper is simple in structure, the arc cross beam has the good anti-impact effect, a center core inside the bumper body is filled with the safety air bag, impact force ...

Preparation method of lithium ion battery positive electrode material

The invention discloses a preparation method of a lithium ion battery positive electrode material. The method is characterized in that a mixture of lithium nitrate and lithium hydroxide acts as a lithium source and also acts as a solvent, so that a lithium source and a cobalt source are subjected to solid-liquid mixing and react nearby a lithium source eutectic point, so that the diffusion path of an ion is shortened, the thermal treatment temperature is lowered and the forging time is shortened, and finally the lithium ion battery positive electrode material with excellent electrochemical performance is obtained.

Nickel-cobalt-lithium manganate ternary anode material suitable for application under high voltage

The invention discloses a nickel-cobalt-lithium manganate ternary anode material suitable for application under high voltage. The molecular formula of the nickel-cobalt-lithium manganate ternary anode material is LiNixMnyCozO2, wherein X is 0.38-0.42, y is 0.33-0.36 and z is 0.23-0.25; the invention also discloses a method for preparing the ternary anode material. The preparation method comprises the steps of introducing alkaline liquid with parallel-connected sodium hydroxide aqueous solution and ammonia solution into mixed solution of nickel salt, cobalt salt and manganese salt to obtain a precursor, mixing the precursor with a lithium source, grinding, roasting, cooling, and sieving to obtain the spherical nickel-cobalt-lithium manganate ternary anode material with uniform particle size distribution. The ternary anode material has high capacity, stable structure, high safety, has good circulating property under high voltage and can be applied to lithium ion batteries.

Equipment and technology for preparing organic acid with bipolar film electrodialysis method

The present invention belongs to the prepn of organic acid and it features the acid chamber and base chamber constituted by bipolar film and cation selecting film. Into the acid chamber is added the salt of organic acid and into the base chamber is added water or electrolyte. The said method has high productivity, less waste liquid amount and low prodn cost.

Positive electrode material for lithium ion battery and preparation method of positive electrode material

The invention discloses a positive electrode material for a lithium ion battery as well as a preparation method and application of the positive electrode material. Slurry prepared from the positive electrode material for the lithium ion battery is still stable after being arranged for a period of time and cannot be gelled, and therefore, a positive electrode piece can be prepared easily; meanwhile, the positive electrode material has excellent cycle performance at high temperature and under high voltage. According to the method for preparing the positive electrode material for the lithium ion battery, a microwave absorbent is added so that raw materials can be synthesized and subjected to coating reaction under a relatively high microwave power without secondary high-temperature annealing, and the added microwave absorbent which is taken as the raw material of the coating does not need to be removed, preparation operation is simple and industrial practicability is achieved.

Control method and control system for water feed pump turbine

The invention discloses a control method and a control system for a water feed pump turbine. An independent manual operating device is added to a pipeline valve again under a high back pressure working condition, the logic that the pipeline valve cannot be opened until the fully open state of a low pressure valve is removed, an auxiliary steam source is used when impulse starting is carried out on a small turbine, after the cold-recycling pressure of a generator unit load belt meets requirements, an operator manually switches the steam source of the small turbine, the small turbine merely uses a cold-recycling steam source under a high back pressure operation working station, a four-section steam pumping system is separated from the auxiliary steam source, and after the pipeline valve is fully opened or opened to a certain opening degree, the rotating speed of the small turbine is still controlled through the valve of a small turbine unit. The control method and control system for the water ...

Plate frame type membrane assembly using comb-type membrane frame

A plate frame type membrane assembly using comb-type membrane frame is sequentially composed of supporting plate, membrane, membrane frame, membrane and supporting plate, which are overlapped. Said membrane frame is comb type and consists of frame plates, pressing piece and pad. Its raw material inlet and material outlet are radically improved. Its advantages are simple structure, use of metallicor plastic sheets, small size, large membrane area, and low cost.

Nano composite gasoline

The present invention discloses a nanometer compound gasoline which is characterized in that the nanometer compound gasoline is prepared by the following raw materials, the raw materials has the weight ratio that the gasoline has 55 to 68 parts, carbinol has 25 to 35 parts, isopropanol or acetone has 2 to 3 parts, anti-swelling anticorrosive agent has 0.1 to 0.2 parts, and fuel additive has 0.0002 parts. The compound gasoline is prepared by mainly utilizing renewable raw materials, the cost is low, the burning is full, and the present invention favors the environmental protection.

Iron-based sodium ion positive electrode material and preparation method and application thereof

The invention provides an iron-based sodium ion positive electrode material and a preparation method and application thereof, the chemical formula of the iron-based sodium ion positive electrode material is NaxFeSO4Fx, and x is greater than or equal to 1 and less than or equal to 2. The iron-based sodium ion positive electrode material designed by the invention is high in charge-discharge platform, high in specific discharge capacity and excellent in cycling stability, can solve the problems of low working voltage and low sodium storage capacity per gram of a sodium ion battery, and is beneficial to preparation of the sodium ion battery with high energy density. Besides, the preparation method of the iron-based sodium ion positive electrode material is simple, the raw materials are rich and low in cost, the technical bottleneck of high manufacturing cost of a sodium ion battery polyanion material is overcome, large-scale production is easy, the practical degree is high, and wide application ...

DC motor overload current control circuit

The invention discloses a direct-current motor overload current controlling circuit which is formed through the connection of a direct-current motor, a direct-current power supply, a power semiconductor element, a sampling resistor and an overload protecting and detecting circuit; the direct-current motor overload current controlling circuit also comprises a voltage polarity converting circuit set which is connected on a circuit between the sampling resistor and the overload protecting and detecting circuit and used for controlling the single voltage polarity of a sampling voltage of the sampling resistor, and the voltage polarity converting circuit set further provides the overload protecting and detecting circuit with the fixed voltage and the fixed electrical potential, and the power semiconductor element is triggered through the overload protecting and detecting circuit so as to carry out the overload protection to the direct-current motor.

Heating network steam-driven circulation water pump system

The invention relates to a heating network steam-driven circulation water pump system. The heating network steam-driven circulation water pump system comprises a steam-driven heating network circulation water pump, a steam supply source of the steam-driven heating network circulation water pump is taken from a steam network, the operating value of the electric overspeed and the operating value of the mechanical overspeed of the steam-driven heating network circulation water pump are distributed in an echelon mode, and the high-and-low arrangement sequences of the operating values correspond to each other. Through the heating network steam-driven circulation water pump system, heat can be recycled, and a very good energy saving effect is achieved; the heating network steam-driven circulation water pump system can guarantee that three small machines will not trip out at the same time when steam inlet pressure of a number 1A heater and steam inlet pressure of a number 1B heater suddenly drop ...

Sodium-ion battery hard carbon negative electrode material and preparation method thereof

The invention provides a sodium ion battery hard carbon negative electrode material and a preparation method thereof, and the preparation method comprises the following steps: (1) mixing a resin precursor and an alcohol solvent, adding zinc oxide, stirring, and curing to obtain a hard carbon precursor; and (2) performing carbonization treatment on the hard carbon precursor obtained in the step (1) in an inert atmosphere, and performing crushing, acid pickling and sieving to obtain the sodium-ion battery hard carbon negative electrode material. Zinc oxide and alcohol in a certain proportion are added into the resin precursor to serve as pore-forming agents to achieve a synergistic effect, regulation and optimization of surface defects and an internal structure of the hard carbon material are achieved, and the prepared hard carbon negative electrode material has the advantages of low specific surface area, large interlayer spacing and micropore volume and high specific surface area. The gram ...

Prevent pavement material intensity tester that residue splashes

The utility model discloses a prevent pavement material intensity tester that residue splashes, it belongs to and detects technical field, and it has to exert pressure examines time measuring, betterblocks the advantage that the residue splashes, its technical scheme, including the test bench, fix the support disc that is used for placing pavement material on the test bench, fix the crossbeam directly over the test bench and detect the flexible detection device of pressure through the pillar, be equipped with the cylindric round baffle of circumference side outside support disc on the test bench, round baffle highly is greater than support disc's height by two closed formation of the semicircular baffle who hinges at the test bench, semicircular baffle, is equipped with the locking subassembly that locks closed back on two semicircular baffle.

Nano composite alcohol group fuel

The invention discloses a nano-composite alcohol group fuel, which is characterized in that the fuel is prepared by 85-98 portion by weight of methanol, 2-5 portion by weight of acetone, 3-10 portion by weight of gasoline or petroleum ether, 0-0.05 portion by weight of ferrocene, and 0.3-0.6 portion by weight of camphor spirit. The composite alcohol group fuel of the invention mainly utilizes reproducible material for preparation and burn abundantly, and the cost is low, which is beneficial to environmental protection.

Core-shell-structure lithium manganate capable of improving high temperature resistance performance, and synthesis method of core-shell-structure lithium manganate

The invention provides core-shell-structure lithium manganate capable of improving the high temperature resistance performance, and a synthesis method of the core-shell-structure lithium manganate, and provides a lithium manganate compounding material which is relatively high in capacity and high in high temperature cycle performance. The compounding material is a core-shell-structure lithium manganate positive material of a lithium ion battery and is expressed as LixMn2O4.yA (wherein x is more than or equal to 1 and less than or equal to 1.3, and y is more than 0 and less than or equal to 0.1); the shell A is made from a lithium ion battery positive material having the electrochemical activity and the high temperature resistance performance and can be expressed as one of LiNi0.5Mn1.5O4, LiCo0.5Mn1.5O4, LiNi(1-a-b)CoaMnbO2(wherein a is more than 0 and is less than 1.0, and the b is more than 0 and less than 1.0), and LiNi(1-c-d)CocAldO2(wherein c is more than 0 and less than 1.0, and d ...

一种环保型微晶合金镀液

... 本发明涉及一种环保型微晶合金镀液，该镀液由下述化工原料按其重量份数配制而成：其中硫酸镍20-30；次磷酸钠15-20；柠檬酸6；乙酸钾12；乙酸铅0.001；硫脲3；α-α’联吡啶0.0005；水950-1000。 ...

Planetary gear reducer back clearance loading detection equipment and system

The invention discloses a planetary gear reducer back clearance loading detection device and detection system. Comprising an operation table plate, a linear guide rail, a sliding seat, a first transition plate, a second transition plate, a rotation quantity wheel mounting plate, a loading motor plate, a planetary gear reducer mounting plate, an indexing motor mounting plate, a loading motor, an encoder, a small rotation quantity wheel, an L-shaped frame, a torque sensor, a right flange shaft, a large rotation quantity wheel, a coupler, a planetary gear reducer, an indexing motor and a computer. A power loading mechanism; and a variable conversion mechanism. The method has the advantages that detection points can be detected according to customer requirements, any points can be detected, detection is automatically and averagely calculated according to 360 degrees of the circumference, the maximum and minimum arc fractions are actual detection results obtained after detection, the average ...

Protective cover for aluminium alloy door and window

The utility model discloses a protective cover for aluminium alloy doors and windows. The utility model is characterized in that the protective cover for aluminium alloy doors and windows is extruded by plastic; according to the shapes of protected aluminium alloy section materials, the cross section of the utility model is matched with the aluminium alloy section materials with the complementation of yin and yang surfaces and concave and convex surfaces; the utility model is buckled on the aluminium alloy section materials to form a protective layer; the aluminium alloy doors and windows are not stained and scratched when installed for construction. The protective cover can be used repeatedly and has the advantages of convenient assembly and disassembly, economy and high durability.

Environment-friendly type accumulator rehabilitation liquor manufacture method

The invention relates to a method for preparing an environment-friendly accumulator repair liquid, which is prepared by raw material proportioning by weight of 90-100 parts of concentrated sulphuric acid, 0.4-0.6 parts of magnesium sulfate, 0.9-1.1 parts of zinc sulfate, 1.6-1.8 parts of tartaric acid, 0.4-0.6 parts of ethylenediamine tetraacetic acid disodium salt, 0.25-0.35 parts of aluminum sulfate, 1.5-2.5 parts of sodium carbonate, 0.9-1.1 parts of potassium sulfate, 6-7 phosphoric acid, 3-4 parts of glycerine, 900-1000 parts of pure water. The method comprises steps of A, adding the phosphoric acid and the glycerine into 450-500 parts of pure water by weight to stir and generate a first compound, B, adding the tartaric acid into the first compound to generate a second compound, C, adding concentrated sulphuric acid slowly into the second compound to generate a third compound, D, adding the magnesium sulfate, the zinc sulfate, the ethylennediamine tetraacetic acid disodium salt, the ...

Preparation method of cobalt phosphate powder material

The invention discloses a preparation method of cobalt phosphate powder material. The method comprises the steps of reacting soluble cobalt salt and soluble phosphate to obtain precipitate cobalt phosphate, and then adjusting the reaction system to be neutral with ammonia water; then carrying out suction filtration on the reaction system, washing, drying, grinding, and screening to obtain the cobalt phosphate powder material. The preparation method is simple, convenient to operate and low in cost; furthermore, the obtained product cobalt phosphate powder material is less in impurity content; the morphology and the particle size of the cobalt phosphate powder material obtained by the preparation technology are controllable, so that the demands on different battery materials can be met.

Feed water pump seal water system with heating mode and pure condensing mode

Provided is a feed water pump seal water system with the heating mode and the pure condensing mode. The feed water pump seal water system with the heating mode and the pure condensing mode comprises a multi-level U-shaped seal water system and a condenser, and further comprises a feed water pump seal water inlet switching pipeline and a water feed pump seal water return switching pipeline, wherein the feed water pump seal water inlet switching pipeline comprises a neighbor machine condensed water inlet pipeline and a native machine feed water pump seal water inlet pipeline, and the water feed pump seal water return switching pipeline is arranged between the multi-level U-shaped seal water system and the condenser, and comprises a heating period water return pipeline and a non-heating period water return pipeline. Compared with the prior art, the feed water pump seal water system with the heating mode and the pure condensing mode has the advantages that the temperature of feed water pump ...

Environment-protecting type microcrystal alloy plating solution

The present invention relates to an environment-protecting type microcrystal alloy plating solution. Said plating solution is formed from (by weight portion) 20-30 portions of nickel sulfate, 15-20 portions of sodium hypophosphite, 6 portions of citric acid, 12 portions of potassium acetate, 0.001 portions of lead acetate, 3 portions of thiourea, 0.0005 portions of alpha-alpha'-bipyridine and 950-1000 portions of water.

Method for reducing content of residual alkaline in nickel cobalt manganese acid lithium

The invention discloses a method for reducing the content of residual alkaline in nickel cobalt manganese acid lithium. According to the method, LiH2PO4 serving as an alkaline treatment agent is used for removing alkaline components such as LiOH, Li2CO3 and LiHCO3 retained in a nickel cobalt manganese acid lithium positive electrode material, so that the structure of the positive electrode material cannot be damaged; furthermore, the circulating performance and the compaction density of the positive electrode material can be improved, and the performance of the battery can be improved; meanwhile, the method is simple and feasible and is suitable for industrial production.

Bathroom combined box type house

The invention relates to the field of box-type house construction, and provides a bathroom combined box-type house which comprises a house main body, and the house main body comprises an accommodation box house, a bathing box house and a sanitary box house; wherein a urinal and a plurality of toilets are arranged in the sanitary box room, a squatting pan is arranged in each toilet, and the urinal and the squatting pans are jointly connected with a blow-off pipeline; a washing basin and a plurality of bathing rooms are arranged in the bathing box room, a floor drain is arranged in each bathing room, and the washing basin and the floor drains are jointly connected with a drainage pipeline. On the basis, when people in the dormitory building suffer from epidemic situation infection, the complete toilets and bathrooms arranged in the dormitory building can meet the daily life requirements of isolated people, the situation of cross infection of people in different dormitory buildings can be ...

Clothing cutting table

The invention discloses a garment tailoring table in the field of garment processing. The garment tailoring table comprises a storage table, and an adjusting mechanism, a pressing assembly, a tailoring mechanism and a collecting mechanism are mounted on the storage table; the collecting device comprises a first collecting pipe, a collecting box, a first feeding port, a second feeding port, a feeding one-way valve, a second collecting pipe, a first air outlet, a second air outlet, an air outlet one-way valve, a piston and a connecting rod. Garment cloth is laid on the storage table and fixed through the material pressing assembly, the adjusting mechanism drives the cutting mechanism and the collecting mechanism to move, and the cutting mechanism cuts the garment cloth. At the moment, the piston moves left and right, negative pressure is generated on the two sides of the collecting box in sequence, and the sweeps are sucked into the collecting box from the first collecting pipe. Therefore ...

Preparation method of high-density high-safety long-life lithium cobaltate

The invention relates to a preparation method of high-density high-safety long-life lithium cobaltate, which comprises the following steps of: adding a fluxing agent in the first high-temperature reaction process of the two-stage preparation method of lithium cobaltate so that the interfacial tension between two raw materials is reduced to achieve better fusion, produce crystal nucleus more easily, shorten crystal growth time, further shorten high-temperature reaction time and increase density; and coating one nanometer semiconductor material layer by adopting a dry method in the second high-temperature process so as to increase the electrochemical properties, the safety and the cycle life of lithium cobaltate. The prepared lithium cobaltate product has large granules, high compacted density, excellent electrochemical properties, convenient reaction process operations, low energy consumption and low cost.

High -efficient whirl air supporting ware

The utility model provides a high -efficient whirl air supporting ware, including a jar body, oil pipe and outlet pipe are arranged to the ejector, jar side wall is provided with the tangential entry, ejector one end links to each other with the tangential entry, and one end links to each other with sewer line, jar body bottom is provided with horizontal plectane, it sets up in jar body top center to arrange oil pipe, the outlet pipe sets up in jar body bottom, the ejector is linked together through a circulation trachea and a jar body top. The utility model discloses combine the synergism of air supporting and low -intensity whirl centrifuge field, enlarge the spread area, shorten the separation time and the problem that reduces equipment oversize, utilize the throttle depressurization of ejector to make the production waste that contains the solution gas release small bubble, utilize the tracheal bleed function of ejector cocycle to introduce small bubble simultaneously, these small bubbles ...

Auxiliary flattening device for leather processing

The invention relates to the field of leather processing, in particular to an auxiliary flattening device for leather processing. The invention provides an auxiliary flattening device for unfolding leather and then processing the leather. An auxiliary flattening device for leather processing comprises a working frame, a conveying belt, guide wheels, a rocker, a pressing mechanism, a bulldozing mechanism and the like, the guide wheels are rotationally connected to the front end and the rear end of the working frame, the conveying belt is wound on the guide wheels, and the rocker is fixedly connected to the guide wheels at the rear end. And a bulldozing mechanism is arranged below the pressing mechanism. According to the leather flattening device, the air pump is arranged, so that multi-stage downward pressing movement is achieved, leather unfolding, flattening and edge pressing work is completed, the purpose of leather flattening is achieved, wrinkles on the leather can be eliminated through ...

Method for manufacturing foamed aluminum and alloy sandwich plate for automobile bumper

The invention discloses a method for manufacturing a foamed aluminum and alloy sandwich plate for an automobile bumper. The method comprises the following steps: (1) coating treatment, wherein an aluminum and alloy panel is selected, the aluminum and alloy panel and foamed powder are pressed, and a rough foamed aluminum and alloy sandwich plate is manufactured; (2) welding, wherein polishing and cleaning treatment is carried out on a welding face of the rough foamed aluminum and alloy sandwich plate, the rough foamed aluminum and alloy sandwich plate is clamped and positioned and then is welded, and the rough foamed aluminum and alloy sandwich plate of the needed specification and size is obtained; (3) foaming, the welded rough foamed aluminum and alloy sandwich plate is placed into a heating furnace to be heated, the heating temperature ranges from 250 DEG C to 650 DEG C, and heating time ranges from 10 minutes to 60 minutes; and (4) cooling, wherein the heated foamed aluminum and alloy ...

Vehicle microphone kit

Stator core processing and flattening device for brushless motor

The invention relates to the technical field of stator core processing devices, in particular to a stator core processing and flattening device for a brushless motor, which comprises a workbench, a guide structure, a driving structure, a fixing structure, a mounting structure and a collecting structure, the positions of the two guide plates can be conveniently adjusted, the operation flexibility is improved, the driving structure drives the fixing structure to fix the stator iron core, the stator is prevented from moving when the stator iron core is pressed and machined, and therefore the product machining quality of the stator iron core is improved; the arrangement of the mounting structure facilitates the replacement of the fixing assemblies on the fixing structure according to the stator cores with different diameters, so that the fixing assemblies with different sizes can fix the stator cores more stably, the arrangement of the collecting structure facilitates the collection of the ...

Redundant water draining system of high-back-pressure units of origin station of heat supply network

The invention relates to a redundant water draining system of high-back-pressure units of an origin station of a heat supply network. The redundant water draining system of the high-back-pressure units of the origin station of the heat supply network comprises the No.2 and No.4 high-back-pressure units of the origin station of the heat supply network. Sealing water of a feed water pump of the No.2 high-back-pressure unit of the origin station of the heat supply network and sprayed water of a low-pressure cylinder of the No.2 high-back-pressure unit of the origin station of the heat supply network are supplied to condensation water of an adjacent machine; No.1A and No.1B heaters of the origin station of the heat supply network drain water, recycle the water and feed the recycled water to deaerators of the No.2 and No.4 high-back-pressure units of the origin station of the heat supply network, and draining electric control valves are additionally arranged on return water pipelines. The redundant ...

Tile paving and jointing device

The invention relates to the technical field of decoration equipment, in particular to a ceramic tile paving and jointing device. The invention provides a ceramic tile paving and jointing device capable of synchronously cleaning gaps. A ceramic tile paving and jointing device comprises a shell, a supporting plate, a spraying assembly and a triggering assembly, the shell is in a gun shape, the supporting plate is arranged at the muzzle end of the shell, the spraying assembly is fixedly connected with the shell and used for spraying and filling ceramic tile gaps with a jointing agent, the triggering assembly is movably connected to the shell, and the supporting plate is arranged on the shell. The trigger assembly is used for controlling a spraying switch, the air blowing assembly comprises a nozzle, an air pipe and a connector, and the nozzle is obliquely installed on the supporting plate. According to the pointing device, blowing cleaning, spraying filling and leveling cleaning work can ...

High-temperature type lithium manganate anode material for power lithium ion battery and preparation method of high-temperature type lithium manganate anode material

The invention discloses a high-temperature type lithium manganate anode material for a power lithium ion battery. The high-temperature type lithium manganate anode material consists of a core material as shown in a formula Li1+xMn2-y-zAyQzO4, and a coating layer on the surface of the core material, wherein the coating layer is one or more of cobaltosic oxide, aluminum oxide and nickel protoxide. The anode material is excellent in high-temperature property, and is good in specific discharge capacity, capacity retention ratio and electrochemical circulation property at high temperature. In addition, the preparation method of the anode material disclosed by the invention is simple in production process, easy to achieve and low in cost, and can be applied to large-scale industrialization production.

High impact resistance composite material for automobile bumpers

The invention relates to a high impact resistance composite material for automobile bumpers. The composite material comprises 14-24wt% of PP, 12-20wt% of PS, 15-25wt% of ABS, 10-15wt% of a dispersant, 12-30wt% of a thickener, 6-25wt% of a fire retardant, 10-15wt% of an antifoaming agent, 10-19wt% of mica powder, 4-6wt% of hollow glass bead, 2-8wt% of graphite powder, 10-15wt% of modified polypropylene, 3-15wt% of iron, 0.1-0.4wt% of zirconium, 0.5-5wt% of chromium carbide and 0.1-1.5wt% of aluminum.

Environment-friendly Internet of Things data transmission method and device

The invention relates to the technical field of data transmission, in particular to an environment-friendly internet-of-things data transmission method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: after acquiring monitoring data sent by a sensing instrument, a lower computer node notifies an intermediate node of a lower computer node address of the lower computer node; after receiving the lower computer node address, the intermediate node records the lower computer node address and responds to the upper computer node address to the lower computer node; the lower computer node acquires an upper computer node address responded by the intermediate node and then transmits the monitoring data to an upper computer node; and after receiving the data delivery reply responded by the upper computer node, the lower computer node sends a data delivery notification to the intermediate node. By adopting the method, the address ...

Method for wrapping lithium cobalt oxide serving as anode material of lithium ion secondary battery through wet method

The invention discloses a method for wrapping lithium cobalt oxide serving as an anode material of a lithium ion secondary battery through a wet method. According to the method for wrapping the lithium cobalt oxide serving as the anode material of the lithium ion secondary battery through the wet method, a soluble metal salt solution is added to the lithium cobalt oxide serving as the anode material, then stirring is conducted, the surface of the lithium cobalt oxide serving as the anode material is completely and evenly wrapped in a layer of corresponding metallic oxide after thermal treatment is conducted, in this way, the circulation performance of the lithium ion secondary battery at high voltage is effectively improved, and the expansion degree of the lithium ion secondary battery is reduced.

Fire purging medicine and its preparation

Said invention disclose a fire-purging drugs which contains 20-100 g of potato charcoallike coal from dry sliced potato,200-250 g of soup fried from 300-500 g of mixed water. The process is that rice charcoal and sliced potato charcoal is made from 30-100 g of rice and 20-100 g of dry sliced potato by stirring, then added with 300-500 g of water mixed and fried to get 200-250 soup. Said invention can treat burn and throat sore etc disease.

Method for preparing high-nickel ternary cathode material of lithium ion battery

The invention discloses a method for preparing a high-nickel ternary cathode material of a lithium ion battery. According to the method, under the existence, a lithium source and a nickel-cobalt-manganese hydroxide/a nickel-cobalt-aluminum hydroxide are used as reaction substrates and are calcined in an oxygen atmosphere to prepare the high-nickel ternary cathode material of the lithium ion battery. According to the method, the dependency on high-concentration oxygen in a preparation process can be reduced; by the use of low-concentration oxygen, the oxygen cost can be lowered, and a requirement on the sealing property of calcining equipment is also reduced, so that the cost is lowered; meanwhile, compared with the high-nickel ternary cathode material of the lithium ion battery, which is prepared by the common method, the high-nickel ternary cathode material of the lithium ion battery, which is prepared by the method disclosed by the invention, is higher in circulating performance and higher ...

Method for LED flexible optical fibre neon utilizing solar energy and illuminating apparatus

Prodn. of oxytetracycline hydrochloride

Plate frame type separator of permeable vaporizing membrane with heating plate

A plate frame type permeable vaporizing membrane separator with heating plate is composed of supporting plate, membrane, raw liquid frame and heating frame. Said raw liquid frame, membrane and supporting plate are overlapped. Said supporting plate consists of supporting sieve plate, supporting plate pad and silk screen. Said raw liquid frame is composed of frame plate and left and right frame pads whose end has metallic pressing piece. Said heating frame consists of heating plate and central heating plate frame in which there is isolating net. Its advantages are good flowing condition, low resistance, high separation effect, simple and compact structure and low cost.

Sodium-ion battery positive electrode material as well as preparation method and application thereof

The invention belongs to the technical field of secondary battery materials, and particularly relates to a sodium ion battery positive electrode material and a preparation method and application thereof. According to the invention, polypyrrole is directly doped to replace a carbon-based material to coat the surface of the polyanionic iron-based sulfate positive electrode material, so that the problems of influence caused by high-temperature carbonization in carbon material coating and low interface conductivity are avoided. By compounding the doped polypyrrole and the polyanionic iron-based sodium sulfate positive electrode material, on one hand, the electronic conductivity of a main body material can be well improved, on the other hand, pyrrole is polymerized to form a long chain, and the polyanionic iron-based sodium sulfate positive electrode material is connected in series into a three-dimensional network skeleton; the charge transfer capability of an interface between positive electrode ...

Vaccum rectification for purifying acetone cyanohydrin

A process for purifying acetone cyanohydrin by vacuum rectification includes the first tower for obtaining refined acetone cyanohydrin and the second tower for recovering acetone and hydrocyanic acid. Theoritically reasonable number of tower plates is calculated out. Rectifying tower uses corrugated metal filler, bottom structure with less stored liquor, and one-pass climbing film reboiling device, so having low decomposing rate and high yield rate.

Clothing with heat preservation device

The utility model provides a clothing with heat preservation device relates to the apparel product field, paste and silica gel drying balls including clothes body, waterproof layer, traditional chinese medicine layer, heat preservation, devices for heating air, intake pipe, air duct, heat dissipation through -hole, pocket, GPS positioner, LED lamp device, magic, clothes body from interior to exterior includes heat preservation, traditional chinese medicine layer, waterproof layer, and the preceding terminal surface intermediate position on waterproof layer and traditional chinese medicine layer passes through the zip fastener to be connected, and the preceding terminal surface intermediate position of traditional chinese medicine layer and heat preservation passes through the zip fastenerto be connected, the utility model discloses well waterproof layer, traditional chinese medicine layer and heat preservation need abluent the time at the clothing, and easy the dismantlement is separately ...

Manufacturing method of economic and practical acrylic cover product

The invention discloses a manufacturing method of an economic and practical acrylic cover product, comprising the following steps of: preparing an acrylic flat plate into an arc-shaped curved surface or distorted cover product; manufacturing a female die and a male die with shapes and sizes required by the manufactured product by adopting gypsum, concrete and wood materials; designing a clearance between the female die and the male die to have constant thickness of raw materials of the product to obtain a machined part; arranging flannel on the inner wall of the female die, and arranging flannel on the outer layer of the male die; tearing off a protective film on the surface of the acrylic flat plate, putting the acrylic flat plate into an oven with adjustable temperature for heating to 120+/-5 DEG C, and keeping the temperature for 5+/-0.5 minutes so that the acrylic flat plate is sufficiently softened; and taking out the acrylic flat plate, putting the acrylic flat plate into the female ...

Cathode of lithium-ion secondary battery, preparation method and lithium-ion secondary battery

The invention provides a cathode of a lithium-ion secondary battery, which comprises a current collector and a cathode material layer covered on the current collector. The cathode material layer is prepared by adopting magnetron sputtering technology under the sputtering power of 1,000 to 5,000 W. By greatly improving the target sputtering power of magnetron sputtering, the prepared lithium-ion secondary battery has high charge/discharge capacitance and excellent cycle performance, and improves the production efficiency of the material, has simple manufacturing process and operation and good electrochemical performance, and greatly improves the primary charge/discharge efficiency and the discharge capacity compared with the reported silicon-based film cathode material.

Method for coating positive electrode material of lithium ion battery with (NH4)3AlF6

The invention discloses a method for coating positive electrode material of a lithium ion battery with (NH4)3AlF6. According to the method, an organic system is taken as a coating medium, so that the problem that the positive electrode material of the lithium ion battery cannot be coated with a water-soluble matter, namely (NH4)3AlF6 through a liquid phase coating method can be solved, meanwhile, the post-treatment process of the coating composite material subjected to coating is simplified, so that the coating effect and the coating efficiency are improved, and a new method for coating the positive electrode material of the lithium ion battery by adopting the organic system can be developed.

Method for LED flexible optical fibre neon utilizing solar energy and illuminating apparatus

The invention discloses an LED soft optical fiber neon lamp illuminating device using the solar energy, which comprises a solar energy power supplying device composed of a solar energy battery plate, a charging and discharging controller and an accumulator cell; an LED optical fiber light source machine composed of a control circuit board, an ultra-large power LED light source, a connector, an optical fiber interface, a machine box and a control button; a soft optical fiber with the illumination effect of the neon lamp. When the sunshine exists in the daytime, the solar energy power supplyingdevice can be turned into charging mode under the control of the charging and discharging controller, so that the sunshine is converted into electric power and then input into the accumulator cell; when the sunshine can not be received in the night, the solar energy device can be turned into the discharging mode under the control of the charging and discharging controller, to provide power sourcefor ...

Monitoring system for tracking abnormal behaviors of students in school

The invention discloses a monitoring system for tracking abnormal behaviors of students in a school, which is characterized in that the monitoring system comprises a monitoring center and a sub-control room, the monitoring center comprises a management platform, and the management platform comprises a video monitoring system, a security alarm system, a vehicle management system, an access control system and a boundary defense system. The video monitoring system is composed of an application display platform, a service platform and an Internet of Things sensing layer, the application display platform comprises a monitoring center control computer and a monitoring center display screen, and the service platform comprises a database server, a forwarding server, a security information service platform and an intelligent analysis platform. The Internet of Things sensing layer comprises a smoke detector, a temperature measurement security check door, an infrared camera, an intelligent barrier ...

Ferro-manganese nickel anode material and preparation method thereof

The invention relates to a ferro-manganese nickel anode material, which is a metal composite oxide consisting of a plurality of main elements such as manganese, ferrum, nickel, lithium, oxygen and the like. The chemical formula of the material is Li1+a (FexMn1-x-yNiy)1-aO2; and compared with the conventional marketized ternary anode material, the ferro-manganese nickel anode material mainly contains the manganese and the ferrum, and has the advantages of no cobalt element, more abundant resources, lower cost, higher safety, and capacity of over 200 to 300mAh/g which is higher than that of 150to 200 mAh/g of the conventional ternary material of the nickel, the manganese and the cobalt. The ferro-manganese nickel anode material can improve the energy density and safety of lithium-ion power batteries further. A preparation method comprises the following steps of: (a) weighing a nickel, manganese and ferrum-containing compound in a stoichiometric ratio, and mixing uniformly by using a ball ...

Through-flow structure of steam turbine

A through-flow structure of a steam turbine comprises an air cylinder and a rotor. The air cylinder is provided with a static vane grid, and the rotor is provided with a dynamic vane grid. The rotor comprises a main shaft which is provided with a front shaft seal, and the through-flow structure is provided with a through-flow interval. The static vane grid is a curve runner, the dynamic vane grid is a curved-surface runner, and the through-flow interval is reduced on the basis of an original through-flow interval. Compared with the prior art, the through-flow structure has the advantage that the through-flow efficiency of the steam turbine is improved furthest by reducing the through-flow interval and adopting reasonable vane grid channels and reasonable leaf-shaped vanes.

Use of rice carbon in pharmacy

The invention relates the use of charred rice. The charred rice is obtained parching. The charred rice has heat and toxic materials clearing away, food stagnation removing, digestion promoting, constipation relieving, and virus inhibiting and killing effects; and can be used for treating common cold and influenza. It has the advantages of good absorbability, good therapeutic effect, and no adverse side effect.

Intermittent gear mechanism and lubricating method thereof

The intermittent gear mechanism comprises a gear shaft and a gear, an oil storage boss is arranged on the outer wall of the gear shaft, an oil storage cavity is formed in the oil storage boss, and an oil injection pipe is arranged at the top of the oil storage boss; an oil suction hole is formed in the top face of the oil storage boss, a fixed sealing block and a movable sealing block are arranged in the oil suction hole, the fixed sealing block is fixedly arranged in the oil suction hole, an oil storage channel is formed between the fixed sealing block and the movable sealing block, and an elastic piece is connected to the end, away from the fixed sealing block, of the movable sealing block. The top of the oil storage channel communicates with the oil storage cavity through a first oil channel and communicates with the oil injection pipe through a second oil channel, and a one-way oil passing structure is arranged on the second oil channel or the oil injection pipe. According to the running ...

Method for judging stability of bulk phase structure of sodium-ion battery positive electrode material

The invention provides a method for determining the bulk phase structure stability of a sodium ion battery positive electrode material, and the method comprises the following steps: (1) dividing the sodium ion battery positive electrode material into two groups, and respectively mixing the two groups with ultrapure water to obtain a turbid liquid 1 and a turbid liquid 2; and (2) respectively stirring the turbid liquid 1 and the turbid liquid 2, carrying out one-step standing on the turbid liquid 1, testing the pH value of a supernatant, transferring the turbid liquid 2 to a closed container, carrying out two-step standing, testing the pH value of the supernatant, and judging the bulk phase structure stability of the sodium-ion battery positive electrode material according to a difference value between the pH values of the turbid liquid 1 and the turbid liquid 2. According to the method, the bulk phase stability of different types of sodium electric transition metal layered oxide positive ...

Method for preparing nickel-cobalt-manganese ternary material precursor

The invention discloses a method for preparing a nickel-cobalt-manganese ternary material precursor. By virtue of the method, waste small-particle-size nickel-cobalt-manganese ternary material precursors in a product are separated out and recycled into a reaction kettle, so that the ternary material precursors with the particle size of 7-15 micro meters account for over 95% in the product.

Have weeder of weeding with turnout function concurrently

The utility model discloses a have weeder of weeding with turnout function concurrently, include along with drive shaft pivoted blade that it lies in with the prior art difference: the decurrent pair of blade or rake teeth that blade one side setting down and blade linked together. Blade among this technical scheme can rotate along with the drive shaft, and high -speed rotatory blade can cut off the grass of erectting. Simultaneously, down vice blade or rake teeth follow the blade rotation to make circular motion, then can cut off the grass that lodges on ground. In addition, putting this lawn mower on the ground, or exerting pressure gently, then lower vice blade or the rake teeth down of blade can get into ground, cuts off the grass roots, still loosens the soil to ground simultaneously, therefore also possesses the function of loosening the soil of weeding.

Material for lithium-ion secondary battery cathode, cathode pole piece and lithium-ion secondary battery

The invention discloses a material used for a lithium-ion secondary battery cathode, which comprises active material silicon or tin. The active material is also doped with carbon element and hydrogenelement. The material used for the lithium-ion secondary battery cathode has the advantages that a cathode pole piece prepared by the cathode material provided by the invention has extremely high volume ratio capacity and excellent cycle performance, and also has high-magnification charge/discharge capacity. Batteries prepared by the pole piece can be widely applied in the fields of electric tools, electric automobiles, energy storage equipment and the like, and have good market prospect.

It send device to add clamping with adjustable

The utility model discloses an it send device to add clamping with adjustable, fixed mounting wallboard on two side guard of belt production line, the bottom plate is installed to the wallboard bottom, the motor is installed to the bottom surface of bottom plate, the tensioning synchronizing wheel, the idler, including a motor, an end cap, a controller, and a cover plate, main transmission synchronous belt wheel, the tensioning synchronizing wheel, the cover is equipped with the hold -in range on the idler, including a motor, an end cap, a controller, and a cover plate, main transmission synchronous belt wheel, the tensioning synchronizing wheel, connect through synchronous belt drive between the idler, main transmission synchronous belt wheel, main driving belt wheel is connected with final drive shaft's both ends through the key, driven pulley, the idler pulley passes through the fixing base and installs on the wallboard, main driving belt wheel, driven pulley, the cover is equipped with ...

Plate frame type membrane assembly using comb-type membrane frame

Steering commutation circuit of DC motor

The invention discloses a DC motor turning switch circuit comprising a second power semiconductor component and a first power semiconductor component. The DC is applied and alternatingly switched on or off according to polarity conversion, then DC motor is switched for turning. The electronic turning switch renders the motor prolonged life span and reduced replacement time and reduces material cost and maintenance cost of the turning switch circuit and promotes the DC motor economic effect and product value.

Novel automobile bumper

The invention discloses a novel automobile bumper. The novel automobile bumper is characterized by comprising a bumper body which adapts to an automobile body, wherein the bumper body comprises an outer layer baffle plate and an inner layer fixing bracket; the outer layer baffle plate of the bumper comprises a safety tire, a safety air bag and a safety frame; the safety tire and the safety frame are connected with the inner layer fixing bracket respectively by using connecting bolts; the baffle plate is connected with the fixing bracket by using a spring. The collision force coming from an opposite side can be absorbed effectively by means of the elastic potential energy of the spring between the automobile body and the bumper body through the safety air bag which fills the gap between the safety tire and the safety frame. Compared with the conventional automobile bumper, the novel automobile bumper has the advantages that impact pressure from the outside can be effectively lowered, and ...

Automobile part production waste collecting device

The utility model discloses a waste collecting device for automobile part production, which belongs to the field of automobile parts and comprises a base, a mounting frame, a screening box, a feeding groove, a water inlet groove, a baffle, a water inlet pipe, a water pump, a separating box, a water outlet groove, a filter screen, a circulating pipe and a discharging structure, and the discharging structure comprises a ball valve, an I-shaped rail, a sliding box, a screen, a drain pipe and a water stop clamp. Water is contained in the screening box, waste generated in the automobile part production process is separated through buoyancy of the water, plastic waste lighter than the water floats on the water surface, waste heavier than the water sinks at the bottom of the screening box, the water is driven by the water pump to flow continuously, and the plastic waste which floats on the water surface and is lighter than the water is flushed into the separation box. And then water is filtered ...

Fire purging medicine and its preparation

Sodium-ion battery positive electrode material and preparation method thereof

The invention relates to the field of sodium-ion battery materials, and particularly provides a sodium-ion battery positive electrode material and a preparation method thereof.The sodium-ion battery positive electrode material comprises polyanion phosphate and a carbon coating layer coating the surface of the polyanion phosphate, the molecular formula of the polyanion phosphate is NaXFeY (PO4) 2P2O7, X is larger than 3 and smaller than 4, Y is larger than 2 and smaller than 3, X/Y is larger than or equal to 1.25 and smaller than or equal to 1.32, and X/Y is larger than or equal to 1 and smaller than or equal to 2. According to the positive electrode material, iron defects exist on the iron site, sodium vacancies exist on the sodium site, the transmission rate of sodium ions is greatly increased through combination of the iron defects and the sodium vacancies, and then the rate performance, the cycle performance and the capacity of the material are improved.

Lithium ion cell anode material coated with nanometer metal and manufacturing method of lithium ion cell anode material

The invention discloses a lithium ion cell anode material coated with nanometer metal and a manufacturing method of the lithium ion cell anode material. The circulation performance of the lithium ion cell anode material is remarkably improved under the high voltage, and a cell manufactured through the lithium ion cell anode material can meet the requirements of electronic products and electrical vehicles for lithium ion cells. The manufacturing method is easy to operate, green and environmentally friendly.

Foaming agent for foamed aluminum materials and preparation technique thereof

The invention relates to a foaming agent for foamed aluminum materials and a preparation technique thereof. The foaming agent is composed of the following components in percentage by mass: 30-50% of dolomite, 1-5% of titanium oxide, 25-35% of calcium carbonate, 5-10% of calcium sulfate, 20-40% of coke, 5-10% of silicon powder and 2-5% of aluminum hydroxide. The sum of the mass percents of the dolomite, titanium oxide, calcium carbonate, calcium sulfate, coke, silicon powder and aluminum hydroxide is 100%. The prepared foaming agent is granular with the particle size of 25-80 mu m. The preparation technique comprises the following steps: (1) proportioning the dolomite, titanium oxide, calcium carbonate, coke and calcium sulfate to obtain powder; (2) sanding the powder with the coke, silicon powder, aluminum hydroxide, deionized water and dispersing agent; (3) granulating the sanded slurry with a spray granulator; and (4) preparing the coated foaming agent of which the surface is coated with ...

Mixed type sodium ion battery positive electrode material and preparation method thereof

The invention provides a mixed type sodium ion battery positive electrode material. The mixed type sodium ion battery positive electrode material comprises an O3 type layered sodium metal oxide and a P2 type layered sodium metal oxide coated on the surface of the O3 type layered sodium metal oxide, in an XRD (X-Ray Diffraction) pattern of the mixed sodium ion battery positive electrode material, the relationship between the diffraction peak intensity I (002) of the crystal face (002) and the diffraction peak intensity I (104) of the crystal face (104) meets the following conditions: 0.21 lt; i (002)/I (104) lt; and 0.27, the stability of the positive electrode material is obviously improved.

Use of rice carbon in pharmacy

The invention relates the use of charred rice. The charred rice is obtained parching. The charred rice has heat and toxic materials clearing away, food stagnation removing, digestion promoting, constipation relieving, and virus inhibiting and killing effects; and can be used for treating common cold and influenza. It has the advantages of good absorbability, good therapeutic effect, and no adverseside effect.

Distribution network hot-line work insulation sleeve rod

A distribution network hot-line work insulation sleeve rod comprises a lower rod and a rocking handle. The bottom end of a rod body of the lower rod is fixedly connected with the upper end of a core rod. The core rod is arranged in a holding pipe. An upper end opening of the holding pipe is fixedly provided with a flange. A circle of radial protruding ring edge is arranged on an outer shell of the flange. A bearing for fixing the core rod is arranged on an inner cavity. The lower end of the core rod is fixedly connected with the rocking handle. According to the distribution network hot-line work insulation sleeve rod, the holding pipe which does not need to rotate along with the rocking handle is added at the bottom end of the lower rod, the flange with the radial protruding ring edge is fixedly arranged at the upper end opening of the holding pipe in a sleeved mode, so that the contradiction of sleeve rod rocking handle rotating and holding hand loosening in due time in the prior art is ...

Preparation method of high-density high-safety long-life lithium cobaltate

The invention relates to a preparation method of high-density high-safety long-life lithium cobaltate, which comprises the following steps of: adding a fluxing agent in the first high-temperature reaction process of the two-stage preparation method of lithium cobaltate so that the interfacial tension between two raw materials is reduced to achieve better fusion, produce crystal nucleus more easily, shorten crystal growth time, further shorten high-temperature reaction time and increase density; and coating one nanometer semiconductor material layer by adopting a dry method in the second high-temperature process so as to increase the electrochemical properties, the safety and the cycle life of lithium cobaltate. The prepared lithium cobaltate product has large granules, high compacted density, excellent electrochemical properties, convenient reaction process operations, low energy consumption and low cost.

Action analysis method based on key point information of human body posture

The invention discloses an action analysis method based on human body posture key point information. The method comprises the following steps: acquiring a posture key point annotation image; supplementing the attitude key point annotation image; performing learning modeling on the time domain dynamic trajectory sequence of the human body posture key points; carrying out region segmentation on the attitude key point labeled image; comparing newly acquired attitude key point information with the model, and simulating a next-stage trajectory of the segmented region; matching the next-stage track with the next-step posture key point information of the human body; and repeating comparison, prompting and alarming when matching cannot be carried out, and recording the posture key point information of the human body monitored in real time for subsequent learning modeling. When human body images and video information are monitored, key point features are extracted to be compared with data in the ...

Automobile welding slag collecting device

The utility model discloses an automobile welding slag collecting device, which belongs to the field of automobile production and comprises a mounting frame, universal wheels, a collecting box, a suction pipe, a first adsorption sheet, a second adsorption sheet, a drawer, a middle partition plate, an exhaust fan and a filter screen. According to the utility model, negative pressure is formed in the collecting box through the exhaust fan, so that a worker uses the suction pipe to suck welding slag on the ground into the collecting box, and the running distance of air flow is prolonged through the blocking of the first adsorption sheet and the second adsorption sheet in the collecting box; iron slag carried by airflow is adsorbed to the first adsorption piece and the second adsorption piece, remaining light waste and dust are intercepted by the filter screen, then filtered air is discharged through the exhaust fan, and then welding slag collection is achieved.

Dynamically Configurable Wireless Data Bus Switch

Provided is a dynamically configurable wireless data bus switch for coupling a data bus to a wireless link. For example, there is a dynamically configurable wireless data bus switch including a configurable protocol adaption layer data plane providing a first interface to a data bus and a processor configured to execute a protocol adaption layer control plane. The configurable protocol adaption layer data plane of the dynamically configurable wireless data bus switch is coupled to the processor and is dynamically configurable by the protocol adaption layer control plane.

COBALT-FREE LAMELLAR CATHODE MATERIAL AND METHOD FOR PREPARING COBALT-FREE LAMELLAR CATHODE MATERIAL, AND LITHIUM ION BATTERY

The present disclosure provides a cobalt-free lamellar cathode material and a method for preparing the cobalt-free lamellar cathode material, and a lithium ion battery. The cobalt-free lamellar cathode material is of a core-shell structure, and a material forming an outer shell of the core-shell structure comprises titanium nitride and a material forming an inner core of the core-shell structure does not comprise cobalt and is of a monocrystal structure. According to the cobalt-free lamellar cathode material provided by the present disclosure, the surface of the cobalt-free inner core is coated with highly conductive titanium nitride, such that while the price cost of the cathode material is lowered, the rate capability of the cathode material can be improved, and thus the rate capability of the cobalt-free cathode material is better. 1. The cobalt-free lamellar cathode material , wherein that the cobalt-free lamellar cathode material is of a core-shell structure , and a material forming an outer shell of the core-shell structure comprises titanium nitride and a material forming an inner core of the core-shell structure does not comprise cobalt and is of a monocrystal structure.2. The cobalt-free lamellar cathode material according to claim 1 , wherein that the material forming the inner core is LiNiMnO claim 1 , wherein claim 1 , 0.55≤x≤0.95 claim 1 , 0.05≤y≤0.45.3. The cobalt-free lamellar cathode material according to claim 2 , wherein that a particle size of the material forming the inner core is 1-5 microns.4. The cobalt-free lamellar cathode material according to claim 1 , wherein t at a thickness of the outer shell is 50-500 nm.5. The cobalt-free lamellar cathode material according to claim 1 , wherein that in the core-shell structure claim 1 , a content of titanium nitride is 0.13-0.39% (wt).6. A method for preparing the cobalt-free lamellar cathode material claim 1 , comprising:providing an inner core material, wherein the inner core material does not ...

Lithium nickel manganese oxide composite material, preparation method thereof and lithium ion battery

Provided are a lithium nickel manganese oxide composite material, a preparation method thereof and a lithium ion battery. The preparation method includes: a first calcining process is performed on a nano-oxide and a nickel-manganese precursor, to obtain an oxide-coated nickel-manganese precursor; and a second calcining process is performed on the precursor and a lithium source material, to obtain the lithium nickel manganese oxide, and a temperature of the first calcining process is lower than the second calcining process. At a lower temperature, the nano-oxide may be melted, a denser nano-oxide coating layer is formed on the surface of the precursor, so the oxide-coated nickel-manganese precursor is obtained. At a higher temperature, the nano-oxide, a nickel-manganese material and a lithium element may be more deeply combined. A problem that the nano-oxide layer is easy to fall off is solved, and cycle performance of the lithium nickel manganese oxide is greatly improved.

Cobalt-free single crystal composite material, and preparation method therefor and use thereof

A cobalt-free single crystal composite material, and a preparation method therefor and a use thereof. The cobalt-free single crystal material is of a core-shell structure, the core layer is the cobalt-free single crystal material, and the shell layer is prepared from TiNb 2 O 7 and conductive lithium salt. The TiNb 2 O 7 and the conductive lithium salt are selected as materials of the shell layer to coat the cobalt-free single crystal material, thereby improving the lithium ion conductivity of the cobalt-free single crystal material, and further improving the capacity and the first effect of the material.

Composite positive electrode material for lithium ion battery, preparation method therefor, and use thereof

A composite positive electrode material for a lithium ion battery, a preparation method therefor, and a use thereof. The composite positive electrode material comprises a positive electrode material core and a halide coating layer that is coated on the surface of the positive electrode material core, wherein halide comprises Li 3 YX 6 , and X is at least one among halogens. By means of the coating of the halide coating layer, the ionic conductivity and structural stability of the positive electrode material are greatly increased, which reduces the surface impedance of the material.

Cobalt-free layered positive electrode material and preparation method therefor, and lithium-ion battery

Carbonate precursor having high-nickel and low-cobalt sandwich structure, preparation method therefor and application thereof

Iron-manganese-based positive electrode material, and preparation method therefor and use thereof

The present application provides an iron-manganese-based positive electrode material, and a preparation method therefor and the use thereof. The preparation method comprises the steps of: S1, subjecting an inorganic compound of lithium and a Fe_xMn_y(OH)₂ precursor to oxidation sintering to obtain an intermediate product, wherein 0<x<1.0, 0<y<1.0, and x+y=1, and the ratio of the molar amount of Li in the inorganic compound of lithium to the total molar amount of Fe and Mn in the F_xMn_y(OH)₂ precursor is (0.1-0.5):1; and S2, subjecting the intermediate product to a second sintering under nitrogen or first inert gas atmosphere conditions to obtain the iron-manganese-based positive electrode material. The iron-manganese-based positive electrode material obtained by the preparation method of the present application has a relatively low content of a lithium element and a more stable structure, such that the intercalation and deintercalation process of lithium ions between the positive electrode and the electrolyte will not affect the original structure of the iron-manganese-based positive electrode material, and the cycling stability of the lithium-ion battery is further ensured.

Iron-manganese-based positive electrode material, and preparation method therefor and use thereof

The present application provides an iron-manganese-based positive electrode material, and a preparation method therefor and the use thereof. The iron-manganese-based positive electrode material is Li a Fe x Mn y O 2 , wherein a=0.1-0.5, 0<x<1.0, 0<y<1.0, and x+y=1; the valence state of at least some of the manganese elements in the iron-manganese-based positive electrode material is positive tetravalence; and the maximum intensity of the characteristic peak of the Li 2 MnO 3 crystal phase in the XRD spectrum of the iron-manganese-based positive electrode material is less than one third of the maximum characteristic peak intensity of the iron-manganese-based positive electrode material, or there is no characteristic peak of the Li 2 MnO 3 crystal phase. In the present application, the initial efficiency and the cycling performance are further better improved by controlling the components and crystal structure of the iron-manganese-based positive electrode material.

Composite negative electrode material and preparation method therefor, negative electrode material and lithium ion battery

The disclosure provides a composite anode electrode material and a preparation method thereof, an anode electrode material and a lithium ion battery. The composite anode electrode material includes a defect-type transition metal oxide and a lithium titanate, wherein the lithium titanate is compounded with the defect-type transition metal oxide in the manner of coating and/or doping, the defect-type transition metal oxide is a secondary particle, and a transition metal element in the defect-type transition metal oxide is selected from any one of tungsten, yttrium and tin. On the one hand, the present application uses the lithium titanate to coat and dope the defect-type transition metal oxide, so that the probability of a side reaction between the defect-type transition metal oxide and an electrolyte is greatly reduced. On the other hand, the "zero strain" of the lithium titanate greatly reduces a volume expansion effect of an anode electrode of a battery in the process of deintercalating lithium ions, thereby the stability of the composite anode electrode material is further improved, and the lithium ion battery including the composite anode electrode material has a higher capacity retention rate after cycling.

A composite anode electrode material and a preparation method thereof, an anode electrode material and a lithium ion battery

The disclosure provides a composite anode electrode material and a preparation method thereof, an anode electrode material and a lithium ion battery. The composite anode electrode material includes a defect-type transition metal oxide and a lithium titanate, wherein the lithium titanate is compounded with the defect-type transition metal oxide in the manner of coating and/or doping, the defect-type transition metal oxide is a secondary particle, and a transition metal element in the defect-type transition metal oxide is selected from any one of tungsten, yttrium and tin. The probability of a side reaction between the defect-type transition metal oxide and an electrolyte is greatly reduced and a volume expansion effect of an anode electrode of a battery in the process of deintercalating lithium ions is greatly reduced, thereby the lithium ion battery including the composite anode electrode material has a higher capacity retention rate after cycling.

Positive electrode material, preparation method therefor and lithium ion battery

Single-crystal high-nickel positive electrode material, preparation method therefor, and application thereof

Provided is a preparation method for a cobalt-free positive electrode material, comprising the following steps: (1) mixing a lithium source, a precursor Ni_xMn_y(OH)₂, and a dopant, and performing primary heat treatment to obtain a matrix material; and (2) mixing the matrix material obtained in step (1) with a coating agent, and performing secondary heat treatment to obtain the cobalt-free positive electrode material, the dopant being a low-melting-point material. Also provided are a cobalt-free positive electrode material prepared by the preparation method, a positive electrode pole piece comprising the cobalt-free positive electrode material, and a lithium-ion battery comprising the positive electrode pole piece. By doping the low-melting-point material in the matrix material, the compactness of the cobalt-free positive electrode material can be improved, thereby reducing gas production, and improving the cycle performance of the material.

Positive electrode material, preparation method therefor and lithium ion battery

A positive electrode material, a preparation method therefor and a lithium ion battery. The positive electrode material has a core-shell structure, the core layer comprises a cobalt-free single crystal positive electrode active material, and the shell layer comprises LiAlO 2 and LiFePO 4 . By coating the surface of the cobalt-free single crystal positive electrode active material with LiAlO 2 and LiFePO 4 , the conductivity of the cobalt-free single crystal layered positive electrode material is improved, thereby improving the capacity, the rate and the cyclability of the material.

Cobalt-free positive electrode material and preparation method therefor, lithium ion battery positive electrode, and lithium ion battery

Composite positive electrode material for lithium ion battery, preparation method therefor, and use thereof

Gradient doped cobalt-free positive electrode material and preparation method therefor, lithium-ion battery positive electrode, and lithium battery

Cobalt-free positive electrode material of lithium ion battery, preparation method therefor, and lithium ion battery

Cobalt-free layered positive electrode material, preparation method therefor, and lithium ion battery

Lithium nickel manganese oxide composite material and preparation method therefor, and lithium ion battery

Cobalt-free positive electrode material, preparation method therefor, and lithium-ion battery

Cobalt-free layered positive electrode material and preparation method therefor, and lithium-ion battery

The present disclosure provides a cobalt-free lamellar cathode material and a method for preparing the cobalt-free lamellar cathode material, and a lithium ion battery. The cobalt-free lamellar cathode material is of a core-shell structure, and a material forming an outer shell of the core-shell structure comprises titanium nitride and a material forming an inner core of the core-shell structure does not comprise cobalt and is of a monocrystal structure. According to the cobalt-free lamellar cathode material provided by the present disclosure, the surface of the cobalt-free inner core is coated with highly conductive titanium nitride, such that while the price cost of the cathode material is lowered, the rate capability of the cathode material can be improved, and thus the rate capability of the cobalt-free cathode material is better.

Cobalt-free positive electrode material, preparation method therefor and application thereof

Provided is a method for preparing a cobalt-free positive electrode material, the method comprising the following steps: (1) mixing lithium titanate and a metal source, carrying out a primary sintering treatment, adding a carbon source, and carrying out a secondary sintering treatment to obtain a carbon-coated, metal-doped lithium titanate additive; (2) mixing a lithium source with a cobalt-free precursor, and performing a high-temperature treatment to obtain a substrate material; and (3) mixing the carbon-coated, metal-doped lithium titanate additive with the substrate material, and then performing a heat treatment to obtain a cobalt-free positive electrode material. Further provided are a cobalt-free positive electrode material prepared by means of the preparation method, a positive electrode sheet including the positive electrode material, and a lithium-ion battery including the positive electrode sheet. In the preparation method, the doped lithium titanate is used to improve the conductivity of a material. In addition, the lithium titanate material is a zero-strain material, and the cycle performance of the material can be improved after the cobalt-free positive electrode material is coated.

Cobalt-free single crystal composite material, and preparation method therefor and use thereof

Cobalt-free layered positive electrode material and method for preparing same, and lithium-ion battery

Doping and coating method, method for modifying ternary positive electrode material using same, and use

The present disclosure provides a doping and coating method, a method for modifying a ternary positive electrode material using same, and the use. The doping and coating method comprises: mixing a doping and coating additive with a co-solvent, pre-sintering, washing, and drying to obtain a low-melting-point additive, and performing, by using a sintering method, doping treatment and/or coating on a material to be modified. According to the method, the sintering temperature and time of doping and coating can be properly reduced, the doping uniformity and the coating bonding firmness are properly improved, and the process requirements are reduced.

Cobalt-free positive electrode material for lithium ion battery, preparation method therefor, and lithium ion battery

Cobalt-free positive electrode material, preparation method thereof and lithium ion battery

Provided are a cobalt-free positive electrode material, a preparation method thereof and a lithium ion battery. The preparation method includes: first sintering step is performed on a lithium source material and a cobalt-free precursor, to obtain a sintered product; the sintered product is crushed to 1 to 2 μm, to obtain a cobalt-free single crystal material; and second sintering step is performed on the cobalt-free single crystal material, a boron coating agent and a carbon coating agent, to obtain the cobalt-free positive electrode material. The cobalt-free positive electrode material prepared by the above method has advantages of stable structure, high electric capacity, excellent current rate performance and good cycle performance and the like.

Carbonate precursor having high-nickel and low-cobalt sandwich structure, preparation method therefor and application thereof

Provided by the present disclosure are a carbonate precursor that has a high-nickel and low-cobalt sandwich structure, a preparation method therefor and an application thereof. The precursor comprises an inner core and an outer shell layer, wherein the outer shell layer covers at least a part of the outer surface of the inner core. The carbonate precursor having the sandwich structure has the advantages of narrow particle size distribution, good fluidity, and an excellent electrochemical performance, and may be stably produced in both an ammonia-free system and an ammonia-containing system.

Carbonate precursor having high-nickel and low-cobalt sandwich structure, preparation method therefor and application thereof

Provided by the present disclosure are a carbonate precursor that has a high-nickel and low-cobalt sandwich structure, a preparation method therefor and an application thereof. The precursor comprises an inner core and an outer shell layer, wherein the outer shell layer covers at least a part of the outer surface of the inner core. The carbonate precursor having the sandwich structure has the advantages of narrow particle size distribution, good fluidity, and an excellent electrochemical performance, and may be stably produced in both an ammonia-free system and an ammonia-containing system.

Composite cobalt-free positive electrode material and preparation method therefor

Composite cobalt-free positive electrode material and preparation method therefor

Provided is a composite cobalt-free positive electrode material, belonging to the technical field of lithium batteries. The material includes a cobalt-free positive electrode material and a composite coating layer. The composite coating layer is formed by uniformly coating the surface of the cobalt-free positive electrode material with a coating material and a dispersant. A metal oxide is used as the coating material, and the surface stability of the positive electrode material is effectively improved.

Cobalt-free cathode material for lithium ion battery, method for preparing cobalt-free cathode material and lithium ion battery

The present disclosure provides a cobalt-free cathode material of a lithium ion battery, a method for preparing the cobalt-free cathode material, and the lithium ion battery. A general formula of the cobalt-free cathode material is Li x Ni a Mn b R c O 2 , wherein, 1≤x≤1.15, 0.5≤a≤0.95, 0.02≤b≤0.48, 0<c≤0.05, and R is aluminum or tungsten. Therefore, as the cobalt-free cathode material is free of metal cobalt, the cost of the cathode material can be lowered effectively. Aluminum or tungsten in the cobalt-free cathode material can stabilize a crystal structure of the cathode material better, such that the lithium ion battery has excellent rate capability and cycle performance, and furthermore, good cycling stability of the lithium ion battery can be still maintained under a high-temperature and high-pressure testing condition.

Cobalt-free layered positive electrode material and preparation method therefor, positive electrode plate, and lithium ion battery

Cobalt-free positive electrode material, preparation method therefor, and lithium-ion battery

Provided are a cobalt-free positive electrode material, a preparation method thereof and a lithium ion battery. The preparation method includes: first sintering step is performed on a lithium source material and a cobalt-free precursor, to obtain a sintered product; the sintered product is crushed to 1 to 2 µm, to obtain a cobalt-free single crystal material; and second sintering step is performed on the cobalt-free single crystal material, a boron coating agent and a carbon coating agent, to obtain the cobalt-free positive electrode material. The cobalt-free positive electrode material prepared by the above method has advantages of stable structure, high electric capacity, excellent current rate performance and good cycle performance and the like.

用於將資料匯流排耦接至無線鏈路的動態可配置無線資料匯流排開關及通過處理器執行它之方法

本發明提供了將資料匯流排耦接至無線鏈路的動態可配置無線資料匯流排開關。例如，存在一種動態可配置無線資料匯流排開關，其包括：可配置協定自我調整層資料平面，向資料匯流排提供第一介面；以及處理器，被配置為執行協定自我調整層控制平面。動態可配置無線資料匯流排開關的可配置協定自我調整層資料平面耦接至所述處理器，並且可由協定自我調整層控制平面動態地配置。

用於將資料匯流排耦接至無線鏈路的動態可配置無線資料匯流排開關及通過處理器執行它之方法

Iron-manganese-based positive electrode material, and preparation method therefor and use thereof

The present application provides an iron-manganese-based positive electrode material, and a preparation method therefor and the use thereof. The preparation method comprises the steps of: S1, subjecting an inorganic compound of lithium and a FexMny(OH)2 precursor to oxidation sintering to obtain an intermediate product, wherein 0<x<1.0, 0<y<1.0, and x+y=1, and the ratio of the molar amount of Li in the inorganic compound of lithium to the total molar amount of Fe and Mn in the FxMny(OH)2 precursor is (0.1-0.5):1; and S2, subjecting the intermediate product to a second sintering under nitrogen or first inert gas atmosphere conditions to obtain the iron-manganese-based positive electrode material. The iron-manganese-based positive electrode material obtained by the preparation method of the present application has a relatively low content of a lithium element and a more stable structure, such that the intercalation and deintercalation process of lithium ions between the positive electrode and the electrolyte will not affect the original structure of the iron-manganese-based positive electrode material, and the cycling stability of the lithium-ion battery is further ensured.

Iron-manganese-based positive electrode material, and preparation method therefor and use thereof

The present application provides an iron-manganese-based positive electrode material, and a preparation method therefor and the use thereof. The iron-manganese-based positive electrode material is LiaFexMnyO2, wherein a=0.1-0.5, 0<x<1.0, 0<y<1.0, and x+y=1; the valence state of at least some of the manganese elements in the iron-manganese-based positive electrode material is positive tetravalence; and the maximum intensity of the characteristic peak of the Li2MnO3 crystal phase in the XRD spectrum of the iron-manganese-based positive electrode material is less than one third of the maximum characteristic peak intensity of the iron-manganese-based positive electrode material, or there is no characteristic peak of the Li2MnO3 crystal phase. In the present application, the initial efficiency and the cycling performance are further better improved by controlling the components and crystal structure of the iron-manganese-based positive electrode material.

一种双色注塑结构的遮物帘

本实用新型公开了一种双色注塑结构的遮物帘，包括外管，外管连接大布帘，大布帘连接有边布帘，大布帘与边布帘之间设置有边条，外管两端都设置有外封盖，外封盖包括硬胶材质外封盖本体，外封盖本体外面包裹有软胶材质的外封盖包胶。本实用新型遮物帘的外管两端设置外封盖，外封盖本体采用硬胶材质，外封盖包胶采用软胶材质，通过双色注塑，一次成型硬胶，二次成型软胶，外封盖包胶采用软胶，增强耐刮擦性能，与侧围配合的时候不易磨损，整个结构简单，软硬胶接触面平整。

Lithium-ion battery positive electrode material and preparation method therefor

The present application proposes a positive electrode material for lithium-ion batteries and preparation method thereof. The positive electrode material for lithium-ion batteries includes Li x Ni a Mn b O 2 , wherein 1<x<1.10, 1:1<a:b<19:1, and a+b=1. The positive electrode material is monocrystalline particles. The positive electrode material for lithium-ion batteries proposed in the present application, i.e., a cobalt-free nickel-manganese monocrystalline positive electrode material is able to form a stable solid electrolyte film on the surface during the initial charge and discharge process. Furthermore, unlike polycrystalline particles, the cobalt-free nickel-manganese monocrystalline positive electrode material will not generate new grain boundary interfaces nor undergo side reactions when being subjected to shrinkage and expansion in the later cyclic charge and discharge process. As a result, the gas production is reduced and the cycling stability of material is enhanced.

Cobalt-free positive electrode material, preparation method therefor and application thereof

Lithium-ion battery positive electrode material and preparation method therefor

Iron-manganese-based positive electrode material, and preparation method therefor and use thereof

Doping and coating method, method for modifying ternary positive electrode material using same, and use

Positive electrode material and preparation method therefor

The present application relates to the field of sodium-ion battery materials, and in particular, to a positive electrode material and a preparation method therefor. The positive electrode material comprises polyanion sodium-iron salt and graphene coated outside the polyanion sodium-iron salt. The positive electrode material is of a hollow porous structure, and the hollow porous structure is combined with the graphene coated outside the polyanion sodium-iron salt, such that the positive electrode material has obviously improved charging-discharging performance and cycling stability.

Iron-manganese-based positive electrode material, and preparation method therefor and use thereof

Single-crystal high-nickel positive electrode material, preparation method therefor, and application thereof

Composite negative electrode material and preparation method therefor, negative electrode material and lithium ion battery

Cobalt-free positive electrode material, preparation method therefor and application thereof

Provided is a method for preparing a cobalt-free positive electrode material, the method comprising the following steps: (1) mixing lithium titanate and a metal source, carrying out a primary sintering treatment, adding a carbon source, and carrying out a secondary sintering treatment to obtain a carbon-coated, metal-doped lithium titanate additive; (2) mixing a lithium source with a cobalt-free precursor, and performing a high-temperature treatment to obtain a substrate material; and (3) mixing the carbon-coated, metal-doped lithium titanate additive with the substrate material, and then performing a heat treatment to obtain a cobalt-free positive electrode material. Further provided are a cobalt-free positive electrode material prepared by means of the preparation method, a positive electrode sheet including the positive electrode material, and a lithium-ion battery including the positive electrode sheet. In the preparation method, the doped lithium titanate is used to improve the conductivity of a material. In addition, the lithium titanate material is a zero-strain material, and the cycle performance of the material can be improved after the cobalt-free positive electrode material is coated.