US 12,107,228 B2Granted

Non-aqueous electrolyte for a lithium ion battery and lithium ion battery

AssigneeShenzhen Capchem Technology Co., Ltd.

InventorsZhongtian Zheng, Ling Zhong, Shiguang Hu, Kai Tu, Qiao Shi, Dejun Xiong

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Abstract

To solve the problem that the existing non-aqueous electrolyte for a lithium ion battery cannot ensure the high-temperature storage performance and cycle performance at the same time, the invention provides a non-aqueous electrolyte for a lithium ion battery, comprising a solvent, a lithium salt and a compound represented by structural formula 1 and/or structural formula 2: Meanwhile, the invention also discloses a lithium ion battery comprising the non-aqueous electrolyte for a lithium ion battery. The non-aqueous electrolyte provided by the invention can effectively improve the cycle performance and high-temperature storage performance of lithium ion batteries.

Claims20

Dependent claims

A non-aqueous electrolyte for a lithium ion battery, comprising a solvent, a lithium salt and a compound represented by structural formula 1 and/or structural formula 2:

wherein A and B are each independently structural formula
or structural formula
R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 are each independently selected from hydrogen, halogen, or a halogenated or non-halogenated organic group with 1-3 carbon atoms, m, n, h and f are 0, 1 or 2, and m+h≥1, n+f≥1;
wherein A and B are each independently structural formula
or structural formula
R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23 and R24 are each independently selected from hydrogen, halogen or a halogenated or non-halogenated organic group with 1-3 carbon atoms, w, r, x and y are 0, 1 or 2, and w+r≥1, x+y≥1.

3 more elements

Dependencies are inferred from the claim text.