Electrolyte and Lithium Ion Battery

Abstract

Provided are electrolyte and lithium ion battery. The electrolyte includes an organic solvent, LiPF6, and an additive, the additive includes heptamethyldisilazane and a cyanosilane compound, and the cyanosilane compound has the following structural formula: formula (I), herein n is any one integer from 1 to 6, R1, R2, and R3 are each independently selected from any one or more of substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C1-C10 alkoxy, substituted or unsubstituted C2-C10 alkynyl, substituted or unsubstituted C6-C12 alkylaryl, and (R4)3SiO—, and R4 is selected from any one of substitute or unsubstituted C1-C10 alkyl. The electrolyte may reduce the low-temperature direct current internal resistance of the lithium ion battery, improve the cycle performance of the lithium ion battery, reduce the growth rate of the direct current internal resistance in the cycle process, and effectively improve the stability and safety of the lithium ion battery on the whole.

Dependencies are inferred from the claim text.