24-12-2020 дата публикации
Номер: US20200399212A1
Принадлежит:
A salt, in particular a lithium salt, that is usable in alkali metal cells and/or batteries, and/or electrolytes and/or additives for same is described. To achieve good ion conductivity as well as temperature and high voltage stability and to prevent corrosion of aluminum, for example a current collector, the salt includes at least one alkali metal ion and/or at least one ammonium compound and at least one anion that contains at least one unfluorinated (N,N-dialkylamide)sulfonyl group and/or at least one unfluorinated (N,N-dialkylamide)sulfoximide group, and at least one (perfluoroalkyl)sulfonyl group. An electrolyte, an additive, a cell, a battery, and a preparation method, are also described. 1. A salt , comprising:at least one alkali metal ion and/or at least one ammonium compound; and at least one unfluorinated (N,N-dialkylamide)sulfonyl group and/or at least one unfluorinated (N,N-dialkylamide)sulfoximide group; and', 'at least one (perfluoroalkyl)sulfonyl group., 'at least one anion, the at least one anion containing3. The salt as recited in claim 2 , wherein R′ and/or R″ and/or R′″ and/or R″″ have at least one negative charge in the form of a bridging azanide group.4. The salt as recited in claim 1 , wherein the salt includes or isa lithium salt that contains at least one lithium ion, and/ora potassium salt that contains at least one potassium ion, and/ora sodium salt that contains at least one sodium ion, and/oran ammonium compound salt that contains at least one ammonium-compound, in particular a salt of an organic ammonium compound that contains at least one organic ammonium compound, and/oran ammonium salt that contains at least one ammonium ion.5. The salt as recited in claim 1 , wherein the salt is a lithium salt that contains at least one lithium ion.6. The salt as recited in claim 2 , wherein:R1 and R2 each independently stand for an unfluorinated methyl group or for an unfluorinated ethyl group or for an unfluorinated propyl group or for an ...
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