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    NON-AQUEOUS ELECTROLYTE AND BATTERY
    54.
    发明公开
    NON-AQUEOUS ELECTROLYTE AND BATTERY 审中-公开

    公开(公告)号：US20240055659A1

    公开(公告)日：2024-02-15

    申请号：US18258422

    申请日：2021-12-16

    Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

    Inventor： Yunxian QIAN ,  Shiguang HU ,  Chaowei CAO ,  Pengkai GUO ,  Chi WANG ,  Shuhuai XIANG ,  Qun CHEN ,  Yonghong DENG

    IPC: H01M10/0567

    CPC classification number: H01M10/0567 ,  H01M2300/0025

    Abstract: Provided are a non-aqueous electrolyte comprising a solvent, an electrolyte salt and a first additive, wherein the first additive is selected from at least one of the compounds as shown in structural formula 1: A-D-B-E-C, structural formula 1, wherein A, B, and C are each independently selected from the group consisting of cyclic carbonate groups, cyclic sulfate groups, cyclic sulfite groups, cyclic sulfonate groups, cyclic sulfone groups, cyclic sulfoxide groups, cyclic carboxylate groups or cyclic anhydride groups; D and E are each independently selected from single bond, or groups containing hydrocarbylene groups, ether bonds, sulfur-oxygen double bonds or carbon-oxygen double bonds; and the content of methanol in the non-aqueous electrolyte is 200 ppm or less. Further disclosed is a battery comprising the non-aqueous electrolyte.

    METHOD FOR IMPROVING ULTRA-VIOLET LIGHT TRANSMITTANCE OF ETHYLENE GLYCOL
    55.
    发明公开
    METHOD FOR IMPROVING ULTRA-VIOLET LIGHT TRANSMITTANCE OF ETHYLENE GLYCOL 审中-公开

    公开(公告)号：US20230406796A1

    公开(公告)日：2023-12-21

    申请号：US18078107

    申请日：2022-12-09

    Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

    Inventor： WENHAO QIU ,  YANG GUO ,  BANGYING WANG ,  SHUHUA ZENG

    IPC: C07C29/94

    CPC classification number: C07C29/94 ,  C07C2523/04 ,  C07C2523/02

    Abstract: The present invention provides a method for improving ultra-violet light transmittance of ethylene glycol, which includes the following steps: (1) subjecting ethylene glycol, a catalyst and water to a hydrolysis reaction at 120° C.-150° C.; and (2) adding a stabilizer into a product of the hydrolysis reaction, then conducting distillation at reduced pressure, and condensing to recover a fraction. The method of the present invention can effectively decompose impurities of carboxyl-, conjugated double bond-, aldehyde and ketone-containing complex organic compounds in the ethylene glycol which affect the ultra-violet light transmittance, obviously improve UV values of the ethylene glycol at 220 nm, 275 nm and 350 nm, give consideration to the requirements of environmental protection and safety and economic benefits, and have a broad application prospect.

    Secondary battery
    56.
    发明授权
    Secondary battery 有权

    公开(公告)号：US11502300B1

    公开(公告)日：2022-11-15

    申请号：US17630514

    申请日：2021-12-27

    Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

    Inventor： Yunxian Qian ,  Shiguang Hu ,  Yonghong Deng ,  Hongmei Li ,  Xiaoxia Xiang

    IPC: H01M4/131 ,  H01M4/60 ,  H01M10/0567 ,  H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/02

    Abstract: Provided is a secondary battery, comprising a positive electrode, the positive electrode comprises a positive electrode material layer, and the positive electrode material layer comprises a positive electrode active material and a compound represented by structural formula I: the positive electrode active material includes one or more of the compounds represented by Li1+xNiaCobM′1−a−bO2−yAy and Li1+zMncL2−cO4−dBd; the positive electrode material layer meets the following requirements: 0.05≤p·u/v≤15 wherein, u is the percentage mass content of element phosphorus in the positive electrode material layer, and the unit is wt %; v is the percentage mass content of element M in the positive electrode material layer, element M is selected from one or two of Mn and Al, and the unit is wt %; p is the surface density of one single surface of the positive electrode material layer, and the unit is mg/cm2.

    Non-aqueous electrolyte for lithium ion battery and lithium ion battery
    57.
    发明授权
    Non-aqueous electrolyte for lithium ion battery and lithium ion battery 有权

    公开(公告)号：US11489199B2

    公开(公告)日：2022-11-01

    申请号：US16640055

    申请日：2017-12-28

    Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

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

    IPC: H01M10/0567 ,  H01M10/0565 ,  H01M10/0525

    Abstract: In order to overcome the problems of influence of residual moisture, poor cycle performance and poor high-temperature storage performance in the existing lithium ion battery, the application provides a non-aqueous electrolyte for lithium ion battery, comprising a solvent, lithium salt and maleic anhydride copolymer, wherein the weight-average molecular weight of the maleic anhydride copolymer is less than or equal to 500,000; Furthermore, the percentage mass content of the maleic anhydride copolymer is 0.5% or more based on the total mass of the non-aqueous electrolyte being 100%. Meanwhile, the application also provides a lithium ion battery comprising the non-aqueous electrolyte. The non-aqueous electrolyte provided by the application is added with maleic anhydride copolymer with a content of more than 0.5% and a weight-average molecular weight of less than 500,000, so that the high-temperature storage and cycle performances of the lithium ion battery are effectively improved.

    CONDUCTIVE POLYMER, CAPACITOR AND PREPARATION METHOD THEREOF
    58.
    发明申请
    CONDUCTIVE POLYMER, CAPACITOR AND PREPARATION METHOD THEREOF 有权

    公开(公告)号：US20220195111A1

    公开(公告)日：2022-06-23

    申请号：US17603940

    申请日：2020-05-08

    Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

    Inventor： Dacheng Zhao ,  Minxiang Yan

    IPC: C08G61/12 ,  C09D165/00 ,  H01G9/025 ,  H01G9/00

    Abstract: The application provides a conductive polymer, comprising a segment obtained by polymerizing a polymer monomer, wherein the polymer monomer comprises a compound represented by Formula I: wherein Y is selected from one of NH and S; R1 and R2 are independently selected from H, an optionally substituted linear or branched alkyl group, optionally substituted cycloalkyl group, optionally substituted aryl group, optionally substituted aralkyl group, optionally substituted alkoxy group or hydroxyl group, or an organic group containing at least one of a carboxyl group, sulfonic acid group and phosphate group, and at least one of R1 and R2 is an organic group containing at least one of carboxyl group, sulfonic acid group and phosphate group. Meanwhile, the application discloses a capacitor comprising the conductive polymer and a preparation method thereof. The conductive polymer provided by the application has a lower ESR and stable electrical performance.

    Non-aqueous electrolyte for lithium ion battery and lithium ion battery
    59.
    发明授权
    Non-aqueous electrolyte for lithium ion battery and lithium ion battery 有权

    公开(公告)号：US11302956B2

    公开(公告)日：2022-04-12

    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 ,  H01M4/02

    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.

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