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：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：US10355310B2

公开(公告)日：2019-07-16

申请号：US15154114

申请日：2016-05-13

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Wentao Li

IPC: H01M10/0567 ,  H01M10/0525 ,  C07D317/40 ,  C07D497/04 ,  H01G11/64

Abstract: Multi-functional additives containing at least one solid electrolyte interface (SEI) forming group and at least one SEI modifying group are advantageously employed in electrolyte compositions for electrochemical devices. The SEI forming group may comprise an organic carbonate moiety and the SEI modifying group may comprise a heteroatom functional group such as a sulfur containing organic moiety. The electrochemical devices include lithium ion batteries.

公开(公告)号：US20190081354A1

公开(公告)日：2019-03-14

申请号：US16085067

申请日：2016-12-29

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Zhongtian ZHENG ,  Qiao SHI ,  Ling ZHONG ,  Shiguang HU ,  Changchun CHEN ,  Xionggui LIN

IPC: H01M10/0566 ,  H01M10/0525

Abstract: A lithium-ion battery non-aqueous electrolyte solution, and a lithium-ion battery using the electrolyte solution. The electrolyte solution comprises one, two, or more of a compound as represented by structural formula I. R1, R2, R3, R4, R5, and R6 are independently selected from hydrogen, halogen atom, or a group comprising 1-5 carbon atoms. Presence of the compound as represented by structural formula I provides excellent performance at a high temperature and at a low temperature to the non-aqueous lithium-ion battery electrolyte solution.

公开(公告)号：US20180083316A1

公开(公告)日：2018-03-22

申请号：US15559014

申请日：2015-07-09

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD

Inventor： Qiao SHI ,  Muchong LILN ,  Dixiong ZHOU ,  Hailing ZHANG

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

CPC classification number: H01M10/0567 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0568 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2300/0025

Abstract: A non-aqueous electrolyte for a lithium-ion battery, and the lithium-ion battery. The non-aqueous electrolyte comprises an organic solvent, a lithium salt, and an additive. The additive comprises 0.1 wt % to 2 wt % of 1,2,3-trifluorobenzene calculated according to the weight of the non-aqueous electrolyte. By adding 1,2,3-trifluorobenzene to the electrolyte as the additive, the compatibility of the electrolyte and an electrode sheet can be effectively improved and the permeability of the electrolyte on the electrode can be improved; and the 1,2,3-trifluorobenzene has the positive electrode film forming effect, and accordingly the positive electrode can be protected and the high-temperature energy storage performance and the cycle performance can be improved.

公开(公告)号：US20250099948A1

公开(公告)日：2025-03-27

申请号：US18937044

申请日：2024-11-05

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： XUEJUN CHEN ,  CHAOWEI CAO ,  BANGYING WANG ,  KAI TU

IPC: B01J31/02 ,  C07D317/34

Abstract: The present disclosure relates to a catalyst for synthesizing a cyclic carbonate and a synthesis method for a cyclic carbonate. The present disclosure provides a novel catalyst of a hydroxy quaternary phosphonium salt structure, wherein a specific type of substituent is selected, such that the catalytic effect of the catalyst is significantly improved, and meanwhile, the catalyst has superior stability. For the cyclic carbonate synthesized by using the catalyst of the present disclosure, the selectivity of the product is as high as 99.8%, and the yield is as high as 99%; the catalyst can still maintain a relatively high yield and relatively good stability after being repeatedly used.

公开(公告)号：US20250062412A1

公开(公告)日：2025-02-20

申请号：US18721453

申请日：2022-12-07

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yunxian Qian ,  Zhongbo Liu ,  Shiguang Hu ,  Yonghong Deng ,  Yong Wang ,  Xiong Huang

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0568 ,  H01M10/0569

Abstract: A non-aqueous electrolyte is provided and includes an electrolyte salt, a non-aqueous organic solvent, and an additive. The non-aqueous organic solvent includes a carboxylate, and the additive comprises a compound represented by formula 1: where n is 0 or 1, A is selected from C or O, X is selected from R1 and R2 are each independently selected from H, R1 and R2 are not selected from H simultaneously, and X, R1 and R2 at least contain one sulfur atom. The non-aqueous electrolyte satisfies following conditions: 0.02≤an/m≤9, 0.01%≤a≤5%, 5%≤m≤70%, and 8%≤n≤25%; where a is a mass percentage content of the compound represented by the formula 1 in the non-aqueous electrolyte, in %; m is a mass percentage content of the carboxylate in the non-aqueous electrolyte, in %; and n is a mass percentage content of the electrolyte salt in the non-aqueous electrolyte, in %. A conductivity of the non-aqueous electrolyte at 25° C. is greater than or equal to 5 mS/cm.

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.

公开(公告)号：US20240322242A1

公开(公告)日：2024-09-26

申请号：US18577680

申请日：2022-06-21

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Shuhuai Xiang ,  Yang Yi ,  Shiguang Hu ,  Yong Zhang

IPC: H01M10/0567 ,  C07F5/04 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/42

CPC classification number: H01M10/0567 ,  C07F5/04 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/4235 ,  H01M2300/004

Abstract: Provided is a non-aqueous electrolyte, comprising a solvent, an electrolyte salt and a compound represented by structural formula 1:




wherein, A, G and X are each independently selected from a cyclic sulfate group and its derivatives, a cyclic sulfonate group and its derivatives, a cyclic sulfite group and its derivatives or a group D; one or none of A, G and X is selected from the group D, and the group D is selected from a C1-C4 alkyl group, a C1-C4 unsaturated hydrocarbon group, a C1-C4 haloalkyl group, a C1-C4 nitrile group, a C1-C4 ether group or a C1-C4 ketone group. The application also provides a battery comprising the non-aqueous electrolyte. By adopting the above compound as an additive for the non-aqueous electrolyte, the film-forming quality of the surfaces of positive and negative electrodes can be effectively improved, and thus the battery performance is improved.