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    COMPOSITE NEGATIVE ELECTRODE MATERIALS AND ELECTROCHEMICAL CELLS INCLUDING THE SAME
    44.
    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.

    DOUBLE-SIDED ELECTRODES AND ELECTROCHEMICAL CELLS INCLUDING THE SAME
    47.
    发明申请
    DOUBLE-SIDED ELECTRODES AND ELECTROCHEMICAL CELLS INCLUDING THE SAME 有权

    公开(公告)号：US20220367848A1

    公开(公告)日：2022-11-17

    申请号：US17690936

    申请日：2022-03-09

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Dewen KONG ,  Haijing LIU ,  Meiyuan WU ,  Xiaochao QUE ,  Sherman H. ZENG ,  Xiaosong HUANG

    IPC: H01M4/137 ,  H01M4/36

    Abstract: The present disclosure provides an electrochemical cell that includes a double-sided electrode. The double-sided electrode includes a first electroactive material layer, a second electroactive material layer, and a current collector disposed between the first and second electroactive material layers. Each of the first and second electroactive material layers may include a plurality of electroactive material sub-films and a plurality of buffer layers disposed between adjacent electroactive material sub-films. The electrochemical cell further includes a first single-sided electrode substantially aligned with the first electroactive material layer; a first separator physically separating the first single-sided electrode and the first electroactive material layer; a second single-sided electrode substantially aligned with the second electroactive material layer; and a second separator physically separating the second single-sided electrode and the second electroactive material layer. The current collector may include at least one surface coated with an adhesive layer.

    SELF-HEATING BIPOLAR SOLID-STATE BATTERY
    48.
    发明申请
    SELF-HEATING BIPOLAR SOLID-STATE BATTERY 有权

    公开(公告)号：US20220302526A1

    公开(公告)日：2022-09-22

    申请号：US17683976

    申请日：2022-03-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe LI ,  Xiaochao QUE ,  Haijing LIU ,  Yong LU ,  Meiyuan WU ,  Jingyuan LIU

    IPC: H01M10/6571 ,  H01M10/0525 ,  H01M10/615 ,  H01M4/80 ,  H01M4/66 ,  H01M10/0585

    Abstract: The present disclosure provides a solid-state battery including at least one current collector that is in communication with one or more switches configured to move between open and closed positions, where the open position corresponds to a first operational state of the solid-state battery and the closed position corresponds to a second operational state of the solid-state battery; one or more electrodes disposed adjacent to the one or more current collectors; and one or more electrothermal material foils including a resistor material that is in electrical communication with that at least one current collector, where in the first operational state electrons may flow through the one or more electrothermal material foils during cycling of the solid-state battery so as to initiate a heating mode, and in the second operational state electrons may flow through the current collector during cycling of the solid-state battery so as to initiate a non-heating mode.

    IN-SITU GELATION METHOD TO MAKE A BIPOLAR SOLID-STATE BATTERY
    49.
    发明申请
    IN-SITU GELATION METHOD TO MAKE A BIPOLAR SOLID-STATE BATTERY 有权

    公开(公告)号：US20220181685A1

    公开(公告)日：2022-06-09

    申请号：US17542299

    申请日：2021-12-03

    Applicant: GM Global Technology Operations LLC

    Inventor： Zhe LI ,  Meiyuan WU ,  Yong LU ,  Haijing LIU ,  Xiaochao QUE

    IPC: H01M10/0565 ,  H01M10/0585

    Abstract: A method for forming a bipolar solid-state battery includes preparing a mixture of gel precursor solution and solid electrolyte. The gel precursor includes a polymer, a first solvent, and a liquid electrolyte. The liquid electrolyte includes a second solvent, a lithium salt, and electrolyte additive. The method includes loading the mixture onto at least one of a first electrode, a second electrode, and a third electrode. Each of the first, second, and third electrodes includes a plurality of solid-state electroactive particles. The method includes removing at least a portion of the first solvent from the mixture to form a gel and positioning one of the first, second, and third electrodes with respect to another of the first, second, and third electrodes. The method includes applying a polymer blocker to a border of the first, second, or third electrodes.

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