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    NON-AQUEOUS ELECTROLYTE FOR A LITHIUM ION BATTERY AND LITHIUM ION BATTERY
    22.
    发明公开
    NON-AQUEOUS ELECTROLYTE FOR A LITHIUM ION BATTERY AND LITHIUM ION BATTERY 审中-公开

    公开(公告)号：US20230411689A1

    公开(公告)日：2023-12-21

    申请号：US18034377

    申请日：2021-10-28

    Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

    Inventor： Chaowei Cao ,  Chi Wang ,  Qun Chen ,  Shiguang Hu

    IPC: H01M10/0567 ,  H01M10/0525

    CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M2300/0025

    Abstract: The present application belongs to the technical field of new energy, in particular to a non-aqueous electrolyte for a lithium ion battery and a lithium ion battery. The non-aqueous electrolyte for a lithium ion battery comprises a non-aqueous organic solvent, a lithium salt, and a spiro compound represented by Structural Formula 1. The compound represented by Structural Formula 1 has the characteristic of sulfonate additives to improve high-temperature storage performance of battery, and also has the characteristic of sulfate additives to improve high-temperature cycle performance of battery. A passivation film is deposited on the surface of positive electrode, and functional group X is further crosslinked to make the coated passivation film more compact and stable, which can effectively improve the electrochemical performance of the electrode, the storage performance and self-discharge performance of the battery.

    LITHIUM ION BATTERY
    23.
    发明公开
    LITHIUM ION BATTERY 审中-公开

    公开(公告)号：US20230231126A1

    公开(公告)日：2023-07-20

    申请号：US17772130

    申请日：2022-04-06

    Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

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

    IPC: H01M4/525 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/62

    CPC classification number: H01M4/525 ,  H01M4/366 ,  H01M10/0525 ,  H01M4/625

    Abstract: Provided is a lithium ion battery, comprising a positive electrode containing a positive electrode material layer, a negative electrode and a non-aqueous electrolyte, the layer comprises a positive electrode active material, the material comprises LixNiyCozM1-y-zO2, M is at least one element selected from Mn and Al, the material is doped or coated with an element E, which is selected from one or more of Ba, Zn, Ti, Mg, Zr, W, Y, Si, Sn, B, Co, and P, a potential range of the positive electrode active material with respect to lithium metal is ≥4.25V;



    the non-aqueous electrolyte comprises a solvent, an electrolyte salt and an additive, the additive comprises a compound represented by structural formula 1:










    the lithium ion battery meets the following requirements:






    0.1≤(H/T)×M/1000≤10; and



    80≤H≤150,0.005≤T≤0.8,0.05≤M≤3.

    The lithium ion battery provided by the application has a lower battery impedance and excellent high-temperature cycle performance.

    Non-aqueous electrolyte for lithium-ion battery and lithium-ion battery
    24.
    发明授权
    Non-aqueous electrolyte for lithium-ion battery and lithium-ion battery 有权

    公开(公告)号：US11362370B2

    公开(公告)日：2022-06-14

    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 ,  C07F9/113 ,  H01M10/056

    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.

    Non-aqueous electrolyte of lithium-ion battery and lithium-ion battery
    25.
    发明授权
    Non-aqueous electrolyte of lithium-ion battery and lithium-ion battery 有权

    公开(公告)号：US11362369B2

    公开(公告)日：2022-06-14

    申请号：US16205258

    申请日：2018-11-30

    Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

    Inventor： Qiao Shi ,  Shiguang Hu ,  Qun Chen ,  Li Wang ,  Zhou He ,  Jiaojiao Yun

    IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/505 ,  H01M4/02 ,  H01M4/525

    Abstract: A lithium-ion battery non-aqueous electrolyte and a lithium-ion battery. The non-aqueous electrolyte comprises at least one selected from the compounds represented by structural formula I and II; in formula I, R1 and R2 are independently selected from alkenyl having 2-5 carbon atoms and alkynyl having 2-5 carbon atoms; in formula II, R3 is selected from alkenyl having 2-5 carbon atoms and alkynyl having 2-5 carbon atoms. The compound represented by formula I or II is added in the electrolyte; the compound contains unsaturated bond(s) and hexafluorisopropyl; the unsaturated bond(s) form passivation film on cathode and anode surfaces to inhibit decomposition of the electrolyte on the cathode & anode surface and damage of the cathode material structure; moreover, the polymerization degree of unsaturated bond(s) can be inhibited to some extent due to steric hindrance relationship of fluoroisopropyl functional groups, so as to improve high-temperature performance of the lithium-ion battery while guaranteeing low-temperature performance.

    Non-aqueous electrolyte for lithium ion battery and lithium ion battery
    26.
    发明授权
    Non-aqueous electrolyte for lithium ion battery and lithium ion battery 有权

    公开(公告)号：US11302963B2

    公开(公告)日：2022-04-12

    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 ,  H01M10/0568

    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.

    Polymer Electrolyte for Lithium Ion Battery and Polymer Battery
    27.
    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.

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