公开(公告)号：US10923762B2

公开(公告)日：2021-02-16

申请号：US16316618

申请日：2016-12-29

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Qiao Shi ,  Shiguang Hu ,  Xionggui Lin ,  Jiaojiao Yun

IPC: H01M10/0525 ,  H01M10/0567 ,  H01M4/525 ,  H01M4/38 ,  H01M4/587 ,  H01M4/36

Abstract: A lithium-ion battery, comprising a cathode, an anode, and a non-aqueous electrolyte; the cathode comprises a cathode active material and a metal oxide and/or metal fluoride coating which covers the surface of the cathode active material; the cathode active material is at least one of materials illustrated in general formula I or II: formula I: LixNiyM1-yO2, wherein 0.5≤x≤1.2, 0.5≤y≤1, and M is selected from at least one of Co, Mn, Al, Ti, Fe, Zn, Zr, Cr, and formula II: LikCozL1-zO2, wherein 0.5≤k≤1.2, 0.5

公开(公告)号：US20190305365A1

公开(公告)日：2019-10-03

申请号：US16316618

申请日：2016-12-29

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Qiao Shi ,  Shiguang Hu ,  Xionggui Lin ,  Jiaojiao Yun

IPC: H01M10/0525 ,  H01M4/525 ,  H01M10/0567 ,  H01M4/36 ,  H01M4/587 ,  H01M4/38

Abstract: A lithium-ion battery, comprising a cathode, an anode, and a non-aqueous electrolyte; the cathode comprises a cathode active material and a metal oxide and/or metal fluoride coating which covers the surface of the cathode active material; the cathode active material is at least one of materials illustrated in general formula I or II: formula I: LixNiyM1-yO2, wherein 0.5≤x≤1.2, 0.5≤y≤1, and M is selected from at least one of Co, Mn, Al, Ti, Fe, Zn, Zr, Cr, and formula II: LikCozL1-zO2, wherein 0.5≤k≤1.2, 0.5

公开(公告)号：US20190237804A1

公开(公告)日：2019-08-01

申请号：US16316621

申请日：2016-12-30

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Qiao Shi ,  Muchong Lin ,  Shiguang Hu ,  Xionggui Lin ,  Jiaojiao Yun ,  Chang'an Zeng

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  C07D317/10 ,  C07D327/10 ,  C07F9/06

CPC classification number: H01M10/0567 ,  C07D317/10 ,  C07D327/10 ,  C07F9/062 ,  H01M10/0525 ,  H01M10/056 ,  H01M10/0569 ,  H01M2300/0037

Abstract: A non-aqueous electrolyte for a lithium-ion battery and a lithium-ion battery. The non-aqueous electrolyte comprises unsaturated phosphate compounds and unsaturated cyclic carboxylic acid anhydride compounds. The unsaturated phosphate compounds have the structure illustrated in structural formula 4; structural formula 4: R13, R11, and R12 are independently selected from hydrocarbon groups having 1-5 carbon atoms respectively, and at least one of R13, R11, and R12 is an unsaturated hydrocarbon group containing double bonds or triple bonds; the unsaturated cyclic carboxylic acid anhydride compounds have the structure illustrated in structural formula 5; structural formula 5: R14 is independently selected from vinylidene having 2-4 carbon atoms or fluoro-substituted vinylidene. By means of the synergistic effect of two compounds, the non-aqueous electrolyte has excellent high-temperature cycling performance and storage performance, and also has lower impedance and good low-temperature performance.

公开(公告)号：US20240136577A1

公开(公告)日：2024-04-25

申请号：US18010817

申请日：2022-11-16

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yonghong Deng ,  Yunxian Qian ,  Shiguang Hu ,  Xionggui Lin ,  Hongmei Li

IPC: H01M10/0567 ,  H01M4/50 ,  H01M10/42

CPC classification number: H01M10/0567 ,  H01M4/502 ,  H01M10/4235 ,  H01M10/0525

Abstract: In order to solve the problem that the existing manganese-based positive electrode material battery has insufficient high-temperature cycle and high-temperature storage performances due to the dissolution of manganese ions, the present application provides a secondary battery, comprising a positive electrode, a negative electrode and a non-aqueous electrolyte, the positive electrode comprises a positive electrode material layer containing a positive electrode active material, the positive electrode active material comprises a manganese-based material, and the non-aqueous electrolyte comprises a solvent, an electrolyte salt and an additive, and the additive comprises a compound represented by structural formula 1:




the secondary battery meets the following requirements:


0.05≤100×W×u/(q×s)≤5;



and 2.0 g/Ah≤W≤4.5 g/Ah, 0.05%≤u≤3.5%, 5%≤q≤65%, 10 mg/cm2≤s≤30 mg/cm2.

The secondary battery has a high capacity retention rate in the cycle and high-temperature storage processes, and has good cycle and storage performances.

公开(公告)号：US11757132B2

公开(公告)日：2023-09-12

申请号：US17735109

申请日：2022-05-02

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Qiao Shi ,  Muchong Lin ,  Shiguang Hu ,  Xionggui Lin ,  Jiaojiao Yun ,  Chang'an Zeng

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/056 ,  C07D327/10 ,  C07D317/10 ,  C07F9/06 ,  C07F9/113

CPC classification number: H01M10/0567 ,  C07D317/10 ,  C07D327/10 ,  C07F9/062 ,  C07F9/113 ,  H01M10/056 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/0037

Abstract: A non-aqueous electrolyte for a lithium-ion battery and a lithium-ion battery. The non-aqueous electrolyte includes an unsaturated phosphate compound and a cyclic unsaturated carboxylic anhydride compound. The unsaturated phosphate compound has a structure represented by structural formula (4). R13, R11 and R12 are each independently selected from a hydrocarbon group having 1 to 5 carbon atoms, and at least one of R13, R11 and R12 is an unsaturated hydrocarbon group having a double bond or a triple bond. The unsaturated cyclic carboxylic anhydride compound having a structure represented by Structural Formula 5. R14 is selected from the group consisting of an alkenylene group having 2 to 4 carbon atoms or a fluorinated alkenylene group having 2 to 4 carbon atoms. By means of the synergistic effect of two compounds, the non-aqueous electrolyte has excellent high-temperature cycling performance and storage performance, and also has lower impedance and good low-temperature performance.

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：US20240097187A1

公开(公告)日：2024-03-21

申请号：US18269755

申请日：2021-12-16

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yunxian Qian ,  Shiguang Hu ,  Guiyan Sun ,  Xionggui Lin ,  Yonghong Deng

IPC: H01M10/0567 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0568 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M4/525 ,  H01M4/623 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028

Abstract: The existing positive electrode material that is doped or coated with compound has the problem OF ion dissolution and battery performance deterioration at high temperature. To solve it, the invention provides a lithium-ion battery, comprising a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the positive electrode comprises a positive electrode material layer, the positive electrode material layer comprises a positive electrode active material, and the positive electrode active material comprises LiMO2, where M is selected from one or more of Ni, Co and Mn, and the positive electrode active material is doped with a compound containing metal element A and/or coated with a compound containing metal element A, the non-aqueous electrolyte comprises a solvent, an electrolyte salt and a compound represented by Structural formula 1. The lithium-ion battery provided by the invention could effectively improve the overall stability of the material.

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：US11362370B2

公开(公告)日：2022-06-14

申请号：US16316621

申请日：2016-12-30

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Qiao Shi ,  Muchong Lin ,  Shiguang Hu ,  Xionggui Lin ,  Jiaojiao Yun ,  Chang'an Zeng

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  C07D317/10 ,  C07D327/10 ,  C07F9/06 ,  C07F9/113 ,  H01M10/056

Abstract: A non-aqueous electrolyte for a lithium-ion battery and a lithium-ion battery. The non-aqueous electrolyte comprises unsaturated phosphate compounds and unsaturated cyclic carboxylic acid anhydride compounds. The unsaturated phosphate compounds have the structure illustrated in structural formula 4; structural formula 4: R13, R11, and R12 are independently selected from hydrocarbon groups having 1-5 carbon atoms respectively, and at least one of R13, R11, and R12 is an unsaturated hydrocarbon group containing double bonds or triple bonds; the unsaturated cyclic carboxylic acid anhydride compounds have the structure illustrated in structural formula 5; structural formula 5: R14 is independently selected from vinylidene having 2-4 carbon atoms or fluoro-substituted vinylidene. By means of the synergistic effect of two compounds, the non-aqueous electrolyte has excellent high-temperature cycling performance and storage performance, and also has lower impedance and good low-temperature performance.

公开(公告)号：US20240421353A1

公开(公告)日：2024-12-19

申请号：US18697481

申请日：2022-12-13

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yunxian Qian ,  Shiguang Hu ,  Yonghong Deng ,  Weixin Liu ,  Yong Wang ,  Xionggui Lin ,  Li Guo ,  Yanmei Jin

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0525

Abstract: In order to overcome the problems of battery expansion and capacity attenuation of the existing lithium ion battery during long-term high-temperature cycle, the application provides a lithium ion battery, which comprises a positive electrode, a negative electrode and a non-aqueous electrolyte, the non-aqueous electrolyte comprise an additive A, an additive B and an additive C; the lithium ion battery satisfies the following condition: 0 . 0 ⁢ 1 ⁢ 5 ≤ ( a + b + c ) × V ≤ 0.09 ; when the lithium ion battery meets the condition of 0.015≤(a+b+c)×V≤0.09, the problem of gas production of electrolyte during long-term high-temperature cycle can be effectively solved, and the expansion rate of battery can be effectively reduced. Meanwhile, with catalysis under higher voltage, the additive could undergo special oxidation reaction on the positive electrode surface, forming a more stable and good protective film, which makes the positive electrode better protected, thus effectively improving the long-term high-temperature cycle capacity retention rate of the battery.