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92 条记录 (耗时 0.027 秒)

    ELECTROLYTE FILM WITH LOW INTERFACIAL RESISTANCE
    77.
    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

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Qili SU ,  Zhi LI ,  Dewen KONG ,  Haijing LIU

    IPC分类号： H01M10/0565

    CPC分类号： H01M10/0565 ,  H01M2300/0085

    摘要： 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.

    COBALT-FREE, HIGH-POWER ELECTROCHEMICAL CELL
    78.
    发明公开
    COBALT-FREE, HIGH-POWER ELECTROCHEMICAL CELL 审中-公开

    公开(公告)号：US20230343951A1

    公开(公告)日：2023-10-26

    申请号：US17855028

    申请日：2022-06-30

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Dewen KONG ,  Haijing LIU

    IPC分类号： H01M4/525 ,  H01M4/62 ,  H01M4/587 ,  H01M4/505 ,  H01M10/0525

    CPC分类号： H01M4/525 ,  H01M4/623 ,  H01M4/587 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/028

    摘要： An electrochemical cell includes a positive electrode including 90 wt. % to 98 wt. % of a cobalt-free electroactive material. represented by LiNixM1-xO2 (where M is manganese, aluminum, magnesium, zirconium, chromium, or a combination thereof and x≥0.75), 0.05 wt. % to 3 wt. % a polytetrafluoroethylene (PTFE) binder having a molecular weight (MW) greater than or equal to about 6,000,000 u, and 1 wt. % to 5 wt. % of a first electronically conductive material. The electrochemical cell also includes a negative electrode including 90 wt. % to 98 wt. % of a graphite-containing negative electroactive material, 0.05 wt. % to 3 wt. % a polytetrafluoroethylene (PTFE) binder having a molecular weight (MW) greater than or equal to about 6,000,000 u, 0.05 wt. % to 2 wt. % of an ancillary binder, and 1 wt. % to 5 wt. % of a second electronically conductive material.

    COMPOSITE NEGATIVE ELECTRODE MATERIALS AND ELECTROCHEMICAL CELLS INCLUDING THE SAME
    79.
    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

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Dewen KONG ,  Qili SU ,  Meiyuan WU ,  Haijing LIU

    IPC分类号： H01M4/62 ,  H01M10/0525

    CPC分类号： H01M4/628 ,  H01M4/623 ,  H01M10/0525 ,  H01M2004/027

    摘要： 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.