23-06-2023 дата публикации
Номер: CN116314815A
Принадлежит:
The invention provides a positive electrode lithium-supplementing flame-retardant additive as well as a preparation method and application thereof, and belongs to the technical field of lithium batteries. The lithium-supplementing flame-retardant additive for the positive electrode is prepared by mixing a lithium-supplementing material and a flame retardant solution, reacting the obtained mixed material in an inert atmosphere, and drying, the flame retardant is phosphite ester, phosphate ester, fluoro-carbonic ester, fluoro-ether, silane or phosphazene; the lithium supplementing material is represented as LixMyN1-yOz, M and N are any two elements of Fe, Co, Ni, Mn, Cu, V, Mo, Ti, Al and Si, x is equal to 2-6, y is equal to 0.5-1, and z is equal to 2-4. The lithium-supplementing flame-retardant additive for the positive electrode, provided by the invention, can achieve a flame-retardant effect while supplementing lithium, and the addition amount of an existing flame retardant in an electrolyte ...
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