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    Polymer Electrolyte for Lithium Ion Battery and Polymer Battery
    1.
    发明申请
    Polymer Electrolyte for Lithium Ion Battery and Polymer Battery 有权

    公开(公告)号：US20210050623A1

    公开(公告)日：2021-02-18

    申请号：US16978765

    申请日：2018-06-27

    Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

    Inventor： Qiao Shi ,  Qiujun Wang ,  Zhongbo Liu

    IPC: H01M10/0565 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505 ,  H01M4/38 ,  H01M4/583

    Abstract: Provided is a polymer electrolyte for lithium ion battery and a polymer battery, comprising polyether polymer and lithium salt, wherein the molar ratio of lithium ions in the lithium salt to oxygen atoms in ether bonds of the polyether polymer is more than 1/4; the polyether polymer comprises polymer of Formula 1: A-Rn; A is a hydrocarbyl group or an oxygen-containing hydrocarbyl group, n is an integer, and n≥1; R is O—Ram1O—Rbn1Rx; Ra and Rb are selected from alkylene, and Rx is selected from organic functional groups and halogen; m1 is a natural number greater than 0, n1 is a natural number, and when n1 is 0, n≥3. Preferably, the ratio of the total number of carbon atoms in all repeating units of the polyether polymer to the total number of repeating units is over 4; More preferably, the polyether polymer has a branched structure.

    Solid electrolyte and polymer lithium ion battery
    3.
    发明授权
    Solid electrolyte and polymer lithium ion battery 有权

    公开(公告)号：US12183883B2

    公开(公告)日：2024-12-31

    申请号：US17434016

    申请日：2020-04-10

    Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

    Inventor： Zhongbo Liu ,  Yuanyuan Kang ,  Furen Zheng ,  Yonghong Deng

    IPC: H01M10/0565 ,  H01M10/0525

    Abstract: In order to overcome the problem of low ionic conductivity in the existing polymer solid electrolyte, the disclosure provides a solid electrolyte, comprising a polymer, a lithium salt and an additive, the additive is selected from an aprotic organic solvent with a carbon number lower than 10 and a relative dielectric constant higher than 3.6; the mass content of the lithium salt is 30%˜90%, and the mass content of the additive is 0.01%˜2%, based on the total mass of the solid electrolyte being 100%. Further provided is a polymer lithium ion battery comprising the solid electrolyte. According to the solid electrolyte of the disclosure, a trace amount of small molecule aprotic organic solvent with high dielectric constant is introduced as an additive, which can inhibit crystallization of the solid electrolyte, promote transmission of lithium ions in the electrolyte, and improve the ionic conductivity of the solid electrolyte at room temperature.

    Solid Electrolyte and Polymer Lithium Ion Battery
    4.
    发明申请
    Solid Electrolyte and Polymer Lithium Ion Battery 有权

    公开(公告)号：US20220140389A1

    公开(公告)日：2022-05-05

    申请号：US17434016

    申请日：2020-04-10

    Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

    Inventor： Zhongbo Liu ,  Yuanyuan Kang ,  Furen Zheng ,  Yonghong Deng

    IPC: H01M10/0565 ,  H01M10/0525

    Abstract: In order to overcome the problem of low ionic conductivity in the existing polymer solid electrolyte, the disclosure provides a solid electrolyte, comprising a polymer, a lithium salt and an additive, the additive is selected from an aprotic organic solvent with a carbon number lower than 10 and a relative dielectric constant higher than 3.6; the mass content of the lithium salt is 30%˜90%, and the mass content of the additive is 0.01%˜2%, based on the total mass of the solid electrolyte being 100%. Further provided is a polymer lithium ion battery comprising the solid electrolyte. According to the solid electrolyte of the disclosure, a trace amount of small molecule aprotic organic solvent with high dielectric constant is introduced as an additive, which can inhibit crystallization of the solid electrolyte, promote transmission of lithium ions in the electrolyte, and improve the ionic conductivity of the solid electrolyte at room temperature.

    Non-Aqueous Electrolyte Solution and Secondary Battery
    5.
    发明申请
    Non-Aqueous Electrolyte Solution and Secondary Battery 有权

    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.

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