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    ELECTRODE ASSEMBLIES PREPARED USING DIFFUSION COUPLING
    2.
    发明公开
    ELECTRODE ASSEMBLIES PREPARED USING DIFFUSION COUPLING 审中-公开

    公开(公告)号：US20240047693A1

    公开(公告)日：2024-02-08

    申请号：US17879419

    申请日：2022-08-02

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jeffrey David CAIN ,  Thomas E. MOYLAN ,  Caleb REESE ,  Sayed Youssef Sayed NAGY ,  Andrew Clay BOBEL

    IPC: H01M4/66 ,  H01M4/04

    CPC classification number: H01M4/661 ,  H01M4/0471 ,  H01M4/0423

    Abstract: An electrode assembly that includes a current collector, a lithium foil, and a solid solution interface that chemically binds the current collector and the lithium foil is provided. The solid solution interface includes a portion of the current collector that is impregnated with lithium atoms diffused from the lithium foil. In some variations, a method for forming the electrode assembly includes heating a precursor electrode assembly that includes a current collector and a lithium metal film to a temperature that is less than a melting point of lithium, so that lithium atoms diffuse into the current collector during the heating. In other variations, a method for forming the electrode assembly includes disposing a molten lithium onto a heated current collector to form a precursor electrode assembly, and cooling the assembly to form a lithium metal layer that is chemically bonded to the current collector.

    METHODS OF MAKING A WIDE METAL SHEET
    5.
    发明申请
    METHODS OF MAKING A WIDE METAL SHEET 有权

    公开(公告)号：US20230140811A1

    公开(公告)日：2023-05-04

    申请号：US17516463

    申请日：2021-11-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Anil K. SACHDEV ,  Louis G. HECTOR, JR. ,  Andrew Clay BOBEL ,  Arianna T. MORALES

    IPC: B21B15/00 ,  B21B3/00 ,  H01M4/04

    Abstract: The present disclosure provides a method of preparing a metal sheet. The method includes extruding a component along an extrusion axis. The component has a wall at least partially defining an interior region. The component includes a metal. The method further includes unfurling the wall to form a sheet precursor. The sheet precursor has a first thickness and a first transverse dimension. The method further includes rolling the sheet precursor along a rolling axis to form the metal sheet. The metal sheet has a second thickness perpendicular to the rolling axis. The second thickness is less than the first thickness. The second transverse dimension is parallel to the rolling axis. The second transverse dimension is greater than the first transverse dimension. In certain aspects, the metal includes lithium and the metal sheet is a lithium metal electrode.

    LAYERED ANODE MATERIALS
    6.
    发明申请
    LAYERED ANODE MATERIALS 有权

    公开(公告)号：US20220384776A1

    公开(公告)日：2022-12-01

    申请号：US17336073

    申请日：2021-06-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jeffrey David CAIN ,  Andrew Clay BOBEL

    IPC: H01M4/134

    Abstract: The present disclosure provides an electroactive material for an electrochemical cell that cycles lithium ions. The electroactive material includes a plurality of electroactive particles having an average diameter greater than or equal to about 100 nm to less than or equal to about 50 μm. Each electroactive particle includes a layered anode material defined by a two-dimensional allotrope. The two-dimensional allotrope includes a plurality of atomic layers that include a negative electroactive material selected from the group consisting of: silicon (Si), germanium (Ge), boron (B), and combinations thereof. In certain variations, the layered anode material may be prelithiated. For example, lithium ions may be dispersed between the atomic layers of the two-dimensional allotrope to pre-lithiate the layered anode material.

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