Shenzhen Capchem Technology Co., Ltd.

Shenzhen Youtuo Technology Co., Ltd.

Ling Zhong

Qiao Shi

Shiguang Hu

Zhongtian Zheng

Changchun Chen

Xionggui Lin

Zhaohui Deng

Dejun Xiong

Kai Tu

Holster

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.

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

Provide is a non-aqueous electrolyte for lithium ion battery, comprising a compound represented by structural formula I:  In formula I, R, R, Rand Rare each independently selected from hydrogen atom, fluorine atom, cyano group, hydrocarbyl group or halogenated hydrocarbyl group having 1-5 carbon atoms, oxygen-containing hydrocarbyl group having 1-5 carbon atoms, silicon-containing hydrocarbyl group having 1-5 carbon atoms, X is a &#x2014;O&#x2014;R&#x2014;CN group, Ris a hydrocarbyl group or a halogenated hydrocarbyl group having 1-5 carbon atoms, m, n, z and y are integers of 0 or 1, and m+n+y+z&#x2260;0. When the non-aqueous electrolyte is used for lithium ion battery, the decomposition of electrolyte on the surface of electrode can be inhibited, and the high-temperature storage performance is improved with less gas generation and small expansion rate, therefore the high-temperature cycle performance and high-temperature storage performance of the battery are effectively improved.

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

A lithium-ion battery non-aqueous electrolyte solution, and a lithium-ion battery using the electrolyte solution. The electrolyte solution comprises one, two, or more of a compound as represented by structural formula I. R, R, R, R, R, and Rare independently selected from hydrogen, halogen atom, or a group comprising 1-5 carbon atoms. Presence of the compound as represented by structural formula I provides excellent performance at a high temperature and at a low temperature to the non-aqueous lithium-ion battery electrolyte solution. 

Lithium-ion non-aqueous battery electrolyte solution, and lithium-ion battery using the electrolyte solution

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Guangdong, China

Ling Zhong