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    GEL ELECTROLYTE SYSTEM FOR SOLID STATE BATTERY
    13.
    发明申请
    GEL ELECTROLYTE SYSTEM FOR SOLID STATE BATTERY 有权

    公开(公告)号：US20230046608A1

    公开(公告)日：2023-02-16

    申请号：US17710900

    申请日：2022-03-31

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Qili SU ,  Zhe LI ,  Mengyan HOU ,  Yong LU ,  Haijing LIU

    IPC: H01M10/0565 ,  H01M10/0525 ,  H01M4/62

    Abstract: An electrochemical cell that cycles lithium ions is provided. The electrochemical cell includes a first electrode, a second electrode, and an electrolyte layer disposed between the first electrode and the second electrode. The first electrode includes a first plurality of solid-state electroactive material particles and a first polymeric gel electrolyte, where the first polymeric gel electrolyte includes a first additive. The second electrode includes a second plurality of solid-state electroactive material particles and a second polymeric gel electrolyte that is different from the first polymeric gel electrolyte, where the second polymeric gel electrolyte includes a second additive. The electrolyte layers include a third polymeric gel electrolyte that is different from both the first polymeric gel electrolyte and the second polymeric gel electrolyte.

    FREE-STANDING GEL MEMBRANE FOR ELECTROCHEMICAL CELL
    14.
    发明公开
    FREE-STANDING GEL MEMBRANE FOR ELECTROCHEMICAL CELL 审中-公开

    公开(公告)号：US20240234811A1

    公开(公告)日：2024-07-11

    申请号：US18131172

    申请日：2023-04-05

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe LI ,  Qili SU ,  Meiyuan WU ,  Yong LU ,  Haijing LIU

    IPC: H01M10/0565 ,  H01M10/0562

    CPC classification number: H01M10/0565 ,  H01M10/0562 ,  H01M2300/0085 ,  H01M2300/0091

    Abstract: An electrochemical cell that cycles lithium ions includes a positive electrode that includes a positive electroactive material, a negative electrode that includes a negative electroactive material, and a free-standing separating layer disposed between the positive electrode and the negative electrode. The free-standing separating layer includes a gel membrane that includes a polymer host and a liquid electrolyte and an integrated structural component disposed within the gel membrane. The integrated structural component may be selected from the group consisting of: a plurality of solid-state electrolyte particles, a nonwoven material, and a combination thereof.

    ELECTROLYTE FILM WITH LOW INTERFACIAL RESISTANCE
    18.
    发明公开
    ELECTROLYTE FILM WITH LOW INTERFACIAL RESISTANCE 审中-公开

    公开(公告)号：US20230411685A1

    公开(公告)日：2023-12-21

    申请号：US17901279

    申请日：2022-09-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Qili SU ,  Zhi LI ,  Dewen KONG ,  Haijing LIU

    IPC: H01M10/0565

    CPC classification number: H01M10/0565 ,  H01M2300/0085

    Abstract: The present disclosure provides an electrolyte layer for use in an electrochemical cell that cycles lithium ions. The electrolyte layer includes a porous film that defines a plurality of voids and includes a plurality of solid-state electrolyte particles and a plurality of polymeric fibrils that connect the solid-state electrolyte particles. The electrolyte layer also includes a gel polymeric electrolyte that at least partially fills the plurality of voids in the porous film. The porous film has a thickness greater than or equal to about 2 micrometers to less than or equal to about 100 micrometers, and a porosity greater than or equal to about 10 vol. % to less than or equal to about 50 vol. %. The a gel polymeric electrolyte fills greater than or equal to about 0.1% to less than or equal to about 150% of a total porosity of the porous film.

    COMPOSITE NEGATIVE ELECTRODE MATERIALS AND ELECTROCHEMICAL CELLS INCLUDING THE SAME
    19.
    发明公开
    COMPOSITE NEGATIVE ELECTRODE MATERIALS AND ELECTROCHEMICAL CELLS INCLUDING THE SAME 审中-公开

    公开(公告)号：US20230307655A1

    公开(公告)日：2023-09-28

    申请号：US17738794

    申请日：2022-05-06

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Dewen KONG ,  Qili SU ,  Meiyuan WU ,  Haijing LIU

    IPC: H01M4/62 ,  H01M10/0525

    CPC classification number: H01M4/628 ,  H01M4/623 ,  H01M10/0525 ,  H01M2004/027

    Abstract: A negative electrode for an electrochemical cell that cycles lithium ions includes a particulate component embedded in a polymeric matrix component that comprises polytetrafluoroethylene. The particulate component includes a plurality of composite particles, with each of the composite particles having a core and a selective barrier layer disposed on a surface of the core. The core of each of the composite particles includes an electroactive negative electrode material. The selective barrier layer of each of the composite particles is formulated to prevent or inhibit electrochemical reactions from occurring between lithium stored in the electroactive negative electrode material of the core and the polytetrafluoroethylene in the polymeric matrix component.

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