公开(公告)号：US20200020973A1

公开(公告)日：2020-01-16

申请号：US16490900

申请日：2017-06-22

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Qiao Shi ,  Muchong Lin ,  Shiguang Hu ,  Ruixing Liu

IPC: H01M10/0525 ,  H01M10/0566

Abstract: In order to solve the problem of insufficient cycle performance and high-temperature storage performance of the existing non-aqueous electrolyte for lithium ion battery containing maleic anhydride copolymer, the application provides a non-aqueous electrolyte for lithium ion battery. The non-aqueous electrolyte for lithium ion battery comprises a compound A represented by formula I and a compound B represented by formula II, In formula I, R7 and R8 are independently selected from one of hydrogen atom, halogen atom, —O—R9 or aryl, wherein n is a positive integer and R9 is a C1-C4 alkyl group; In formula II, R1, R2, R3, R4, R5 and R6 are each independently selected from one of hydrogen atom, fluorine atom and C1-C5 group. The non-aqueous electrolyte for lithium ion battery provided by the invention can improve the cycle stability and high-temperature storage performance of the battery through the effections of compound A and compound B.

公开(公告)号：US20190207242A1

公开(公告)日：2019-07-04

申请号：US16311674

申请日：2016-12-29

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Muchong Lin ,  Qiao Shi ,  Ruixing Liu

IPC: H01M10/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/62 ,  H01M4/505

CPC classification number: H01M10/045 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/62 ,  H01M4/621 ,  H01M4/625 ,  H01M10/0525

Abstract: Provided are a cathode plate of a lithium ion battery and a preparation method therefor and a lithium ion battery. The cathode plate comprises a cathode current collector and a cathode material located on the cathode current collector. The cathode material comprises a cathode active material, a binder, a conductive agent and an additive, wherein the additive comprises at least one of the compounds shown by structural formula I; and in structural formula I, the monomer of R is R1, R1 is an alkenyl compound or an ether compound containing an alkenyl, and n is a positive integer. The cathode plate contains a compound shown by structural formula I. The compound forms a protective layer on the surface of the particles of the cathode active material and reduces a side reaction between the cathode active material and an electrolyte at a high voltage.

公开(公告)号：US11489190B2

公开(公告)日：2022-11-01

申请号：US16490900

申请日：2017-06-22

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Qiao Shi ,  Muchong Lin ,  Shiguang Hu ,  Ruixing Liu

IPC: H01M10/0525 ,  H01M10/0566

Abstract: In order to solve the problem of insufficient cycle performance and high-temperature storage performance of the existing non-aqueous electrolyte for lithium ion battery containing maleic anhydride copolymer, the application provides a non-aqueous electrolyte for lithium ion battery. The non-aqueous electrolyte for lithium ion battery comprises a compound A represented by formula I and a compound B represented by formula II, In formula I, R7 and R8 are independently selected from one of hydrogen atom, halogen atom, —O—R9 or aryl, wherein n is a positive integer and R9 is a C1-C4 alkyl group; In formula II, R1, R2, R3, R4, R5 and R6 are each independently selected from one of hydrogen atom, fluorine atom and C1-C5 group. The non-aqueous electrolyte for lithium ion battery provided by the invention can improve the cycle stability and high-temperature storage performance of the battery through the effections of compound A and compound B.

公开(公告)号：US11081720B2

公开(公告)日：2021-08-03

申请号：US16311674

申请日：2016-12-29

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Muchong Lin ,  Qiao Shi ,  Ruixing Liu

IPC: H01M10/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/62 ,  H01M4/525 ,  H01M4/04 ,  H01M4/136 ,  H01M4/58

Abstract: Provided are a cathode plate of a lithium ion battery and a preparation method therefor and a lithium ion battery. The cathode plate comprises a cathode current collector and a cathode material located on the cathode current collector. The cathode material comprises a cathode active material, a binder, a conductive agent and an additive, wherein the additive comprises at least one of the compounds shown by structural formula I; and in structural formula I, the monomer of R is R1, R1 is an alkenyl compound or an ether compound containing an alkenyl, and n is a positive integer. The cathode plate contains a compound shown by structural formula I. The compound forms a protective layer on the surface of the particles of the cathode active material and reduces a side reaction between the cathode active material and an electrolyte at a high voltage.