公开(公告)号：US20180076483A1

公开(公告)日：2018-03-15

申请号：US15557780

申请日：2015-10-09

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD

Inventor： Qiao SHI ,  Muchong LIN ,  Guchun CHEN ,  Shiguang HU

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/48 ,  H01M10/46

CPC classification number: H01M10/0567 ,  H01M4/48 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/46 ,  H01M2004/028 ,  H01M2300/0037

Abstract: A non-aqueous electrolyte of a lithium-ion battery and a lithium-ion battery. The electrolyte comprises a non-aqueous organic solvent, a lithium salt and an additive. The additive comprises substances containing the following compounds (A) and (B): (A), where R1, R2, R3 are independently selected from hydrocarbon groups having 1 to 4 carbon atoms respectively, and at least one of R1, R2, R3 is an unsaturated hydrocarbon group containing a triple bond; (B) lithium bis(fluorosulfonyl)imide. The nonaqueous electrolyte of the lithium-ion battery enables the lithium-ion battery to have a lower impedance and better low-temperature and high-temperature performances.

公开(公告)号：US20190089000A1

公开(公告)日：2019-03-21

申请号：US16084929

申请日：2016-07-27

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Qiao SHI ,  Muchong LIN ,  Shiguang HU ,  Hailing ZHANG ,  Qi GUO

IPC: H01M10/0567 ,  H01M10/0525

Abstract: The present invention discloses a lithium-ion battery electrolyte and a lithium-ion battery. The electrolyte comprises an organic non-aqueous solution, a lithium salt, and an additive. The additive comprises: (A) fluoroethylene carbonate; (B) at least one compound from the following: a saturated dinitrile or an unsaturated nitrile as represented by structural formula (1), wherein R1 is an unsaturated hydrocarbon group with 3-6 carbon atoms and R2 is an alkene group with 2-5 carbon atoms; and (C) at least one unsaturated phosphate ester as represented by structural formula (2), wherein R3, R4, and R5 are each a hydrocarbon with 1-4 carbon atoms, and at least one of R3, R4, and R5 contain an unsaturated hydrocarbon with a triple bond.

公开(公告)号：US20200303774A1

公开(公告)日：2020-09-24

申请号：US16085541

申请日：2016-12-29

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Qiao SHI ,  Muchong LIN ,  Shiguang HU ,  Hailing ZHANG ,  Qi GUO

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0525 ,  H01M2/16 ,  H01M4/583

Abstract: Disclosed is a lithium ion battery using a non-aqueous electrolyte. The lithium ion battery comprises a positive electrode, a negative electrode, a separator arranged between the positive electrode and the negative electrode, and a non-aqueous electrolyte of the lithium ion battery. An active substance of the positive electrode comprises LiFePO4; the non-aqueous electrolyte of the lithium ion battery comprises a non-aqueous organic solvent, a lithium salt and an additive; and the additive at least comprises (A) vinylene carbonate, and at the same time, also comprises at least one of (B) a compound shown in a structural formula 1 and (C) a fluorobenzene, wherein n is a natural number of 1-3, and each of R1, R2, R3 and R4 is independently selected from one of a hydrogen atom, a fluorine atom, and an alkyl group with 1-6 carbon atoms. The lithium ion battery has a long cycle life, and at the same time, the battery has excellent high and low temperature performance.