公开(公告)号：US20220013810A1

公开(公告)日：2022-01-13

申请号：US17294176

申请日：2019-11-22

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Dejun Xiong ,  Qiao Shi ,  Shiguang Hu ,  Jiaojiao Yun

IPC: H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  C07F9/09

Abstract: Provided is a non-aqueous electrolyte, comprising a solvent, a lithium salt, an additive A and an additive B, the additive A is selected from compound represented by structural formula 1, and the additive B is selected from one or more of compounds represented by structural formula 2 and structural formula 3: R1 is an alkenyl with 2-5 carbon atoms or an alkynyl with 2-5 carbon atoms, R2 is a fluoroalkyl with 1-5 carbon atoms, R3 is an alkyl with 1-4 carbon atoms, an aryl with 6-10 carbon atoms, an alkenyl with 2-5 carbon atoms, an alkynyl with 2-5 carbon atoms or a fluoroalkyl with 1-5 carbon atoms. Meanwhile, the invention also discloses a lithium ion battery comprising the non-aqueous electrolyte. The non-aqueous electrolyte provided by the invention can effectively give consideration to both high and low temperature performances of the battery.

公开(公告)号：US20220006123A1

公开(公告)日：2022-01-06

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 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/36 ,  H01M4/38

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：US20210399341A1

公开(公告)日：2021-12-23

申请号：US17286821

申请日：2019-10-29

Applicant: SHANGHAI ZIJIAN CHEMICAL TECHNOLOGY CO., LTD ,  SHENZHEN CAPCHEM TECHNOLOGY CO. LTD

Inventor： Haiying CHE ,  Yonghong DENG ,  Xinrong YANG ,  Zifeng MA

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

Abstract: The present invention relates to an electrolyte, an additive thereof, a secondary cell, and an application thereof. An organic electrolyte according to a first aspect of the invention comprises a salt, a phosphate ester and a fluoroether, and does not comprise a carbonate ester. The salt is a lithium salt or a sodium salt. The electrolyte according to a second aspect of the invention comprises a base electrolyte and an additive. The base electrolyte comprises a sodium salt and a flame retardant solvent. The flame retardant solvent comprises a phosphate ester and a fluoroether. The additive comprises a fluorine-containing additive. The electrolyte and the secondary cell of the present invention increase safety.

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.

公开(公告)号：US20200020983A1

公开(公告)日：2020-01-16

申请号：US16490897

申请日：2017-06-21

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Qiao Shi ,  Chang'an Zeng ,  Muchong Lin

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/42

Abstract: In order to solve the problem of poor cycle performance (especially high temperature cycle performance) of the existing lithium ion battery electrolyte containing anhydride or anhydride derivatives, the disclosure 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 the structural formula I, R0 is C2-C4 alkylene or alkenylene, or C2-C4 fluoroalkylene or fluoroalkenylene; 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 is obtained by combining the compound A and compound B, so that the lithium ion battery containing the non-aqueous electrolyte has better cycle performance and high-temperature storage performance.

公开(公告)号：US20200020972A1

公开(公告)日：2020-01-16

申请号：US16490899

申请日：2017-06-23

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

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

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

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：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：US09870874B2

公开(公告)日：2018-01-16

申请号：US14655289

申请日：2014-06-26

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Zhongtian Zheng ,  Yingjie Cao ,  Chaowei Cao ,  Longliang Xue ,  Xiaoxia Xiang

IPC: H01G9/035 ,  H01G11/62 ,  H01G11/60 ,  H01G11/32

CPC classification number: H01G11/62 ,  H01G11/32 ,  H01G11/60 ,  Y02E60/13

Abstract: The present invention relates to the electrochemical field, particularly to an electrolyte solute and an electrolyte that are used for a high-voltage supercapacitor, and a high-voltage supercapacitor using the electrolyte. The anion of the electrolyte solute may be one or more selected from tetrafluoroborate, hexafluorophosphate, bis(trifluoromethylsulfonyl) imide, tris (trifluoromethylsulfonyl) methyl and perfluoroalkyl sulfonate, and the cation may be N-methyl-1,4-diazabicyclo[2.2.2]octane ammonium, N,N-dimethyl-1,4-diazabicyclo[2.2.2]octane ammonium, N-methyl-1-azabicyclo[2.2.2]octane ammonium. The high-voltage supercapacitor fabricated by using the electrolyte formulated by the electrolyte solute of the present invention can work stably for a long period of time at a voltage of 2.7 V to 3.2 V, the energy density is greatly increased, the property of high power density is maintained, and the working life is prolonged.