公开(公告)号：US20200313237A1

公开(公告)日：2020-10-01

申请号：US16770281

申请日：2018-06-27

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Shiguang Hu ,  Qiao Shi ,  Zhaohui Deng ,  Xionggui Lin

IPC: H01M10/0567 ,  H01M10/0525

Abstract: In order to solve the problems of insufficient high-temperature storage performance and high-temperature cycle performance of the existing lithium ion battery, the present application provides a non-aqueous electrolyte for lithium ion battery, comprising a bicyclic sulfate compound and a compound A represented by structural formula 1. In structural formula 1, R3, R4, R5, R6, R7 and R8 are each independently selected from hydrogen, fluorine atom or a group containing 1˜5 carbon atoms. Meanwhile, the application also discloses a lithium ion battery comprising the non-aqueous electrolyte for lithium ion battery. The non-aqueous electrolyte for lithium ion battery provided by the application is beneficial to improving high-temperature storage and high-temperature cycle performance of battery.

公开(公告)号：US11881555B2

公开(公告)日：2024-01-23

申请号：US16770281

申请日：2018-06-27

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Shiguang Hu ,  Qiao Shi ,  Zhaohui Deng ,  Xionggui Lin

IPC: H01M10/0567 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M2300/0025

Abstract: In order to solve the problems of insufficient high-temperature storage performance and high-temperature cycle performance of the existing lithium ion battery, the present application provides a non-aqueous electrolyte for lithium ion battery, comprising a bicyclic sulfate compound and a compound A represented by structural formula 1. In structural formula 1, R3, R4, R5, R6, R7 and R8 are each independently selected from hydrogen, fluorine atom or a group containing 1˜5 carbon atoms. Meanwhile, the application also discloses a lithium ion battery comprising the non-aqueous electrolyte for lithium ion battery. The non-aqueous electrolyte for lithium ion battery provided by the application is beneficial to improving high-temperature storage and high-temperature cycle performance of battery.

公开(公告)号：US20200161704A1

公开(公告)日：2020-05-21

申请号：US16610905

申请日：2017-06-23

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Zhaohui Deng ,  Shiguang Hu ,  Muchong Lin ,  Qiao Shi

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  C07D407/04 ,  C07F7/18

Abstract: To solve the problems that the existing non-aqueous electrolyte for lithium ion battery containing fluorinated solvent generates serious gas expansion when improving high-temperature cycle performance and affects high-temperature safety performance of battery. The application provides a non-aqueous electrolyte for lithium ion battery. The non-aqueous electrolyte for lithium ion battery comprises a compound A and a compound B, wherein the compound A is at least one of compounds represented by the following structural formula I, formula II and formula III; the compound B is a compound represented by the following structural formula IV; formula I: R1—COO—R2; formula II: R3—OCOO—R4. The non-aqueous electrolyte for lithium ion battery provided by the invention contains both the compound A and the compound B, the synergistic effect of compound A and compound B can effectively improve high-temperature cycle performance and high-temperature storage performance of battery, and can also give consideration to low-temperature performance of battery.

公开(公告)号：US20200168953A1

公开(公告)日：2020-05-28

申请号：US16632862

申请日：2017-12-28

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Zhongtian Zheng ,  Ling Zhong ,  Shiguang Hu ,  Qiao Shi ,  Changchun Chen ,  Zhaohui Deng

IPC: H01M10/0567 ,  C07D317/36 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0525

Abstract: Provide is a non-aqueous electrolyte for lithium ion battery, comprising a compound represented by structural formula I: In formula I, R1, R2, R3 and R4 are 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 —O—R5—CN group, R5 is 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≠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.

公开(公告)号：US11380937B2

公开(公告)日：2022-07-05

申请号：US16632862

申请日：2017-12-28

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Zhongtian Zheng ,  Ling Zhong ,  Shiguang Hu ,  Qiao Shi ,  Changchun Chen ,  Zhaohui Deng

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  C07D317/36

Abstract: Provide is a non-aqueous electrolyte for lithium ion battery, comprising a compound represented by structural formula I: In formula I, R1, R2, R3 and R4 are 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 —O—R5—CN group, R5 is 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≠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.