| abstract |
A lithium ion battery electrolyte and a lithium ion battery belong to the technical field of lithium ion batteries. The lithium ion battery electrolyte includes an additive Y, and the additive Y is shown in structural formula I, wherein R 1 and R 2 are independently substituted or unsubstituted C 1-6 alkyl, C 2 ‑ Any one of C 6 alkenyl, alkoxy and carboxyl, R 3 is any one of substituted or unsubstituted C 1-20 alkyl, C 2 -C 6 alkenyl, alkoxy and carboxyl, A lithium ion battery is also disclosed, and the present invention has the advantages of simultaneously improving the normal temperature and high temperature cycles of the lithium secondary battery, and taking into account the low temperature performance. |