Proton exchange membrane fuel cell bipolar plate with high mechanical property, electric conductivity and thermal conductivity

The invention discloses a proton exchange membrane fuel cell composite material bipolar plate which consists of a phenolic resin, titanium carbide, graphite and a curing agent. The bipolar plate has the electric conductivity of 210S/cm, the bending strength of 36MPa, the compressive strength of 105MPa and the thermal conductivity of 40<-6> W/mK. The graphite powder, the modified phenolic resin and the titanium carbide powder are selected. The titanium carbide (TiC) is in a face-centered cubic crystal form, is high in melting point, high in thermal conductivity, high in hardness, high in chemical stability and high in high-temperature oxidation resistance, does not react with acids at normal temperature and has high corrosion resistance and extremely high electric conductivity (higher than that of pure graphite), the mechanical property, electric conductivity and thermal conductivity of the phenolic resin/graphite composite material bipolar plate can be greatly improved, and the prepared ...

Composite bipolar plate for proton exchange membrane fuel cell and production method thereof

The invention discloses a composite bipolar plate for a proton exchange membrane fuel cell and a production method thereof. The composite bipolar plate comprises phenolic resin, titanium carbide, graphite and a curing agent. In the invention, graphite powder, modified phenolic resin and titanium carbide powder are selected. Titanium carbide (TiC) belongs to face-centered cubic lattices, has high melting point, good heat conducting property, high hardness, good chemical stability and good high-temperature oxidation resistance, can not react with acid at normal temperature and has strong corrosion resistance and high conductivity (higher than pure graphite). The mechanical properties, the conductivity and the heat conducting property of the phenolic resin/graphite composite bipolar plate can be greatly improved, and the prepared bipolar plate not only has higher conductivity and heat conductivity, but also has higher strength and hydrogen corrosion resistance.

Crawler-type coal cleaning machine

The invention discloses a crawler-type coal cleaning machine, which belongs to the technical field of underground mine passage cleaning, and comprises a rack, a coal collecting device arranged at the lower part of one side of the rack, a coal lifting device obliquely arranged on the rack and used for bearing the coal collecting device, and a power device arranged on the rack and used for driving the coal collecting device and the coal lifting device, a chain scraper conveyor used for bearing the coal lifting device is further arranged on the rack; a walking device used for driving the rack to move is arranged on the lower side of the rack. The coal powder feeding device can automatically collect and feed coal powder in a coal mine tunnel and convey the coal powder to a belt, is simple to operate and convenient to use, and can greatly strengthen the labor intensity of workers, improve the working efficiency and save the cost.

Hydrogen-electricity hybrid electrical vehicle

The invention discloses a hydrogen-electricity hybrid electrical vehicle. The hydrogen-electricity hybrid electrical vehicle comprises a hydrogen-electricity power source which is a mixed power source mixed by two power sources such as a fuel cell and a secondary cell. The mixedness range of the mixed power source mixed by the two power sources such as the fuel cell and a lead-acid cell or the fuel cell and a nickel-metal hydride battery is 0.4-0.7. The mixedness range of the mixed power source mixed by the two power sources such as the fuel cell and a lithium cell is 0.5-0.8. On the premise of satisfying power property requirements of vehicles, for example, the highest speed is more than or equal to 90 km/h, the hundred-kilometer acceleration time is less than or equal to13.6s, and the gradeability is more than or equal to 25%, the economy of hydrogen fuel and the service life of the cell are the best.

Tapered cylindrical membrane electrode for oxyhydrogen proton exchange membrane fuel cell

Tapered cylindrical membrane electrode for oxyhydrogen proton exchange membrane fuel cell

The invention discloses a tapered cylindrical membrane electrode for oxyhydrogen proton exchange membrane fuel cell, which is characterized by comprising an anode in contact with hydrogen, a composite membrane and a cathode in contact with air from inside to outside; the composite membrane is composed of a proton exchange membrane (which usually is a Nafion membrane), an output joint is arranged at a anode plate, a seal ring used for isolating the anode output joint from the composite membrane and the cathode is arranged at the anode output joint and a cathode output joint is arranged at the bottom of the cathode; and the anode is in a cone shape, the composite membrane is in a cone shape matched with the cone shape of the anode, the cathode is a hollow pipe, the outside surface of the cathode hollow pipe is cylindrical and the inner hole of the cathode hollow pipe takes a shape of a cone hole with the same conical degree as the cathode. In the invention, the structure is reasonable and ...