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    METHODS OF LITHIATING ELECTROACTIVE MATERIALS
    2.
    发明公开
    METHODS OF LITHIATING ELECTROACTIVE MATERIALS 审中-公开

    公开(公告)号：US20240213438A1

    公开(公告)日：2024-06-27

    申请号：US18087421

    申请日：2022-12-22

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jeffrey David CAIN ,  Thomas E. MOYLAN ,  Sayed Youssef Sayed NAGY ,  Nicholas Paul William PIECZONKA ,  Yuntao GU

    IPC: H01M4/04

    CPC classification number: H01M4/0459

    Abstract: A method for forming an electroactive material includes sourcing a current or voltage to an electrochemical reactor that includes a cation source, an electrolyte mixture, and an electroactive material precursor in contact with one another, where the current or voltage serves to ionize and form cations at the cation source that react with the electroactive material precursor in the electrolyte mixture to form the electroactive material. The method may include one or more filtering steps, one or more rinsing steps, or a combination of one or more filtering steps and one or more rinsing steps to collect the electroactive material from the electrolyte.

    ELECTRODE ASSEMBLIES PREPARED USING DIFFUSION COUPLING
    3.
    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 FOR FABRICATING TWO-DIMENSIONAL ANODE MATERIALS
    4.
    发明申请
    METHODS FOR FABRICATING TWO-DIMENSIONAL ANODE MATERIALS 有权

    公开(公告)号：US20230060634A1

    公开(公告)日：2023-03-02

    申请号：US17465012

    申请日：2021-09-02

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Thomas E. MOYLAN ,  Jeffrey David CAIN

    IPC: H01M4/04 ,  H01M4/36 ,  H01M4/48 ,  C01B33/12

    Abstract: The present disclosure provides methods for forming a two-dimensional silicon oxide negative electroactive material. The methods include contacting a two-dimensional silicon allotrope and an oxidizing agent in an environment having a temperature of greater than or equal to about 25° C. to less than or equal to about 1,000° C., where the contacting of the two-dimensional silicon allotrope and the oxidizing agent causes the two-dimensional silicon allotrope to oxidize and form the two-dimensional silicon oxide negative electroactive material. In certain variations, the oxidizing agent includes oxygen and the contacting of the two-dimensional silicon allotrope and the oxidizing agent may include disposing the two-dimensional silicon allotrope in an oxygen-containing environment comprising less than or equal to about 21% of oxygen. In other variations, the oxidizing agent includes a wet chemical agent.

    Passive Ion Exchange For The Fabrication Of A Layered Anode Material
    5.
    发明申请
    Passive Ion Exchange For The Fabrication Of A Layered Anode Material 有权

    公开(公告)号：US20220384774A1

    公开(公告)日：2022-12-01

    申请号：US17335987

    申请日：2021-06-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jeffrey David CAIN ,  Thomas E. MOYLAN ,  Paul Taichiang YU ,  Mark W. VERBRUGGE

    IPC: H01M4/04 ,  H01M10/0569

    Abstract: The present disclosure provides a method for forming a prelithiated, layered anode material. The method includes contacting a precursor material and an electrolyte that includes one or more lithium salts and one or more solvents. The electrolyte may have a molarity greater than or equal to about 0.1 M to less than or equal to a solubility limit of the one or more lithium salts in the one or more solvents. The precursor material may be a three-dimensional layered material and the contacting of the precursor material and the electrolyte causes removal of cations from the precursor material and introduction of lithium ions from the electrolyte into interlayer spaces or voids created by the removal of the cations to form the prelithiated, layered anode material.

    Electrochemical Exchange For The Fabrication Of A Layered Anode Material
    6.
    发明申请
    Electrochemical Exchange For The Fabrication Of A Layered Anode Material 有权

    公开(公告)号：US20220384773A1

    公开(公告)日：2022-12-01

    申请号：US17335972

    申请日：2021-06-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jeffrey David CAIN ,  Thomas E. MOYLAN ,  Leng MAO ,  Paul Taichiang YU ,  Nicholas Paul William PIECZONKA ,  Andrew Clay BOBEL

    IPC: H01M4/04 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0562

    Abstract: The present disclosure provides a method for forming a layered anode material. The method includes contacting a precursor material and a first electrolyte. The precursor material is a layered ionic compound represented by MX2, where M is one of calcium and magnesium and X is one of silicon, germanium, and boron. The method further includes applying a first bias and/or current as the precursor material contacts the first electrolyte so as to remove cations from the precursor material to create a two-dimensional structure that defines the layered anode material. In certain variations, the method further include contacting the two-dimensional structure and a second electrolyte, and applying a second bias and/or current as the two-dimensional structure contacts the second electrolyte so as to cause lithium ions to move into interlayer spaces or voids created in the two-dimensional structure by the removal of the cations thereby forming the layered anode material.

    COMPOSITE ELECTRODES INCLUDING EMBEDDED POROUS CURRENT COLLECTORS AND METHODS OF MANUFACTURING THE SAME
    7.
    发明公开
    COMPOSITE ELECTRODES INCLUDING EMBEDDED POROUS CURRENT COLLECTORS AND METHODS OF MANUFACTURING THE SAME 审中-公开

    公开(公告)号：US20240258526A1

    公开(公告)日：2024-08-01

    申请号：US18103129

    申请日：2023-01-30

    Applicant: GM Global Technology Operations LLC

    Inventor： Sayed Youssef Sayed NAGY ,  Meng JIANG ,  Thomas E. MOYLAN ,  Jeffrey David CAIN ,  Caleb REESE ,  Anil K. SACHDEV

    IPC: H01M4/62 ,  H01M4/04 ,  H01M4/66

    CPC classification number: H01M4/625 ,  H01M4/0404 ,  H01M4/661

    Abstract: A composite electrode for an electrochemical cell that cycles lithium ions may include a metal current collector having a three-dimensional porous structure defining an interconnected network of open pores and an electrode material disposed within the open pores of the current collector. An oxygen-containing reactive layer may be formed on surfaces of the current collector and an electrode precursor mixture may be deposited thereon and dried to form a solid electrode material having a continuous structure within the open pores of the current collector. The electroactive material particles and/or the electrically conductive agent may interact with the oxygen-containing reactive layer on the metal current collector to form an oxygen-containing adhesive layer along an interface between the current collector and the solid electrode material. The electroactive material particles and the electrically conductive agent may be chemically bonded to the current collector via hydrogen bonds within the oxygen-containing adhesive layer.

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