公开(公告)号：US20240313263A1

公开(公告)日：2024-09-19

申请号：US18259300

申请日：2021-12-16

Applicant: Shenzhen Capchem Technology Co., Ltd.

Inventor： Shiguang Hu ,  Yunxian Qian ,  Chaowei Cao ,  Pengkai Guo ,  Xiaoxia Xiang ,  Chi Wang ,  Shuhuai Xiang ,  Qun Chen ,  Yonghong Deng

IPC: H01M10/0567 ,  C07D411/14 ,  H01M4/02 ,  H01M4/131 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  C07D411/14 ,  H01M4/131 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2300/0025

Abstract: A lithium-ion battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode includes a positive electrode material layer, the positive electrode material layer includes a positive electrode active material, and the positive electrode active material includes LiNixCoyMnzL(1-x-y-2)O2, where L is Al, Sr, Mg. Ti, Ca, Zr, Zn, Si, Cu, V or Fe, 0.5≤x≤1, 0≤y≤0.5, 0≤z≤0.5, 0≤x+y+z≤1, and an upper limit voltage of the lithium-ion battery is ≥4.2 V. The non-aqueous electrolyte includes a solvent, an electrolyte salt and a compound represented by formula 1: A-D-B-E-C, Formula 1. Based on a total mass of the non-aqueous electrolyte as 100%, the compound represented by the formula 1 is added in an amount of 0.01 to 5.0%.

公开(公告)号：US12009480B2

公开(公告)日：2024-06-11

申请号：US17281280

申请日：2019-09-29

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yonghong Deng ,  Bing Han ,  Yinglin Xiao

IPC: H01M10/0568 ,  H01M4/36 ,  H01M4/38 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0569

CPC classification number: H01M10/0568 ,  H01M4/364 ,  H01M4/381 ,  H01M4/382 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0034 ,  H01M2300/0037

Abstract: Provided is a metal-sulfur battery, comprising a positive electrode material, a negative electrode material and an electrolyte, the positive electrode material comprises one of elemental sulfur and S-based compound; the electrolyte comprises a solvent and an electrolyte salt; and the electrolyte salt comprises one or more salts represented by structural formulas 1-3:






wherein, R1 is selected from S or Se; R2 is selected from C, Si, Ge or Sn; M1 is selected from N, B, P, As, Sb or Bi; M2 is selected from Li, Na, K, Ru, Cs, Fr, Al, Mg, Zn, Be, Ca, Sr, Ba or Ra; R3 is selected from a carbon chain or an aromatic ring with part or all of hydrogen substituted by other elements or groups. The metal-sulfur battery provided by the disclosure can effectively solve the short circuit problem caused by metal dendrites on the negative electrode of existing metal-sulfur battery.

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：US20240079652A1

公开(公告)日：2024-03-07

申请号：US18259332

申请日：2021-12-16

Applicant: Shenzhen Capchem Technology Co., Ltd.

Inventor： Yunxian Qian ,  Shiguang Hu ,  Fangzheng Liu ,  Yonghong Deng

IPC: H01M10/0568 ,  H01M4/131 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525

CPC classification number: H01M10/0568 ,  H01M4/131 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525

Abstract: In order to overcome the problems in existing lithium ion batteries having high compactness and high-specific-surface-area negative electrodes of serious side reactions of electrolytes and high gas production, the present invention provides a lithium ion battery, comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode comprises a negative electrode material layer, the compaction density of the negative electrode material layer is greater than or equal to 1.4 g/cm3, and the negative electrode material layer comprises a negative electrode active material, and the non-aqueous electrolyte comprises a solvent, an electrolyte salt, a vinylene carbonate, a fluoroethylene carbonate, and an unsaturated phosphate represented by structural formula 1, and the electrolyte salt comprises LiPF6 and LiFSI. The lithium ion battery provided by the present invention has good cycle performance, high and low temperature storage performance, and lithium precipitation resistance.

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：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：US20220255120A1

公开(公告)日：2022-08-11

申请号：US17628217

申请日：2020-07-30

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yonghong Deng ,  Yuanyuan Kang ,  Yunxian Qian ,  Shiguang Hu ,  Hao Zhang

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

Abstract: The application provides a non-aqueous electrolyte for a lithium ion battery, including a non-aqueous organic solvent and lithium salt, and the non-aqueous electrolyte further includes one or more selected from the compounds represented by Formula 1 and Formula 2. R1, R2, R3 and R4 are each independently selected from a substituted or unsubstituted alkyl group and ether group and unsaturated hydrocarbon group, and at least one of R1, R2, R3 and R4 is the substituted or unsubstituted unsaturated hydrocarbon group, and R5 is selected from a substituted or unsubstituted alkylene group and ether group; R6, R7 and R8 are each independently selected from a substituted or unsubstituted alkyl group and ether group and unsaturated hydrocarbon group, provided that at least one of R6, R7 and R8 is the substituted or unsubstituted unsaturated hydrocarbon group. The application also provides a lithium ion battery including the non-aqueous electrolyte.

公开(公告)号：US20220059868A1

公开(公告)日：2022-02-24

申请号：US17519565

申请日：2021-11-04

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

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

IPC: H01M10/0525 ,  H01M4/131 ,  H01M10/0567 ,  H01M10/0569

Abstract: 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, R1, R2 and R3 are independently selected from C1-C5 alkyl or haloalkyl, C2-C5 unsaturated hydrocarbon group or unsaturated halohydrocarbon group, and at least one of R1, R2 and R3 is the unsaturated hydrocarbon group or unsaturated halohydrocarbon group; In formula II, R4, R5, R6, R7, R8 and R9 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 application enables the battery to have excellent cycle performance and high-temperature storage performance through the synergistic effect of the compound A and the compound B.

公开(公告)号：US11177506B2

公开(公告)日：2021-11-16

申请号：US16490895

申请日：2017-06-23

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Qiao Shi ,  Muchong Lin ,  Shiguang Hu ,  Guanjie Ai

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

Abstract: To address the existing problem of insufficient cycle performance and high-temperature storage performance of lithium ion battery electrolyte at high pressure, the disclosure provides a non-aqueous electrolyte for lithium ion battery. The non-aqueous electrolyte for lithium ion battery comprises a cyano-containing compound A and a compound B represented by formula I, The non-aqueous electrolyte for lithium ion battery provided by the disclosure contains both the cyano-containing compound A and the compound B, so that the lithium ion battery containing the non-aqueous electrolyte can have better cycle performance and high-temperature storage performance at high pressure.

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.