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    COMPOSITE ELECTRODES INCLUDING EMBEDDED POROUS CURRENT COLLECTORS AND METHODS OF MANUFACTURING THE SAME
    1.
    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.

    ELECTROLYTES FOR ELECTROCHEMICAL CELLS THAT CYCLE LITHIUM IONS
    5.
    发明公开
    ELECTROLYTES FOR ELECTROCHEMICAL CELLS THAT CYCLE LITHIUM IONS 审中-公开

    公开(公告)号：US20240128512A1

    公开(公告)日：2024-04-18

    申请号：US17965306

    申请日：2022-10-13

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Meng JIANG ,  Chuanlong WANG

    IPC: H01M10/0569 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0525 ,  H01M10/0567

    CPC classification number: H01M10/0569 ,  H01M4/386 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2004/028

    Abstract: An electrochemical cell includes a first porous electrode, a second porous electrode, and a separating layer disposed therebetween. The first porous electrode includes an electrolyte intermingled with a positive electroactive material represented by:


    LiM1xM2yM3zM4(1−x−y−z)O2

    where M1 include nickel (Ni) and M2, M3, and M4 are transition metals independently selected from the group consisting of: manganese (Mn), cobalt (Co), aluminum (Al), iron (Fe), and combinations thereof and where 0.8≤x≤1, 0≤y≤1, and 0≤z≤1. The second porous electrode includes the electrolyte intermingled with a silicon-based negative electroactive material. The electrolyte includes greater than or equal to about 0.5 wt. % to less than or equal to about 2 wt. % of an electrolyte additive including (2-cyanoethyl)triethoxysilane (TEOSCN). The electrolyte also includes a lithium-containing salt and a solvent mixture including ethylene carbonate (EC) and dimethyl carbonate (DMC) in mass ratio of about 3:7.

    PATTERNED CURRENT COLLECTOR FOR ANODELESS ELECTROCHEMICAL BATTERY CELLS
    6.
    发明公开
    PATTERNED CURRENT COLLECTOR FOR ANODELESS ELECTROCHEMICAL BATTERY CELLS 审中-公开

    公开(公告)号：US20230335753A1

    公开(公告)日：2023-10-19

    申请号：US17720919

    申请日：2022-04-14

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Meng JIANG ,  Jiazhi HU ,  Biqiong WANG ,  Meinan HE ,  Fan XU ,  Michael P. BALOGH

    IPC: H01M4/72 ,  H01M4/134

    CPC classification number: H01M4/72 ,  H01M4/134

    Abstract: An anodeless electrochemical cell is provided that includes a positive electroactive material layer and a patterned current collector. The patterned current collector includes a non-conductive substrate and a conductive network disposed over a surface of the non-conductive substrate. The surface of the non-conductive substrate defines a first surface area, and a perimeter of the conductive network defines a second surface area. The second surface area covers greater than 90% of the first surface area. The conductive network includes a framework having plurality of pores, such that the conductive network has a porosity greater than or equal to about 20 vol. % to less than or equal to about 95 vol. %. During a charging event, the pores are configured to receive deposited lithium metal. The anodeless electrochemical cell further includes a separator between the positive electroactive material layer and the patterned current collector.

    MULTILAYER SILOXANE COATINGS FOR SILICON NEGATIVE ELECTRODE MATERIALS FOR LITHIUM ION BATTERIES
    7.
    发明申请
    MULTILAYER SILOXANE COATINGS FOR SILICON NEGATIVE ELECTRODE MATERIALS FOR LITHIUM ION BATTERIES 有权

    公开(公告)号：US20210057752A1

    公开(公告)日：2021-02-25

    申请号：US16547084

    申请日：2019-08-21

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Meng JIANG ,  Lei WANG ,  Raghunathan K

    IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/36

    Abstract: A negative electroactive material for use in a negative electrode of an electrochemical cell that cycles lithium ions is provided. The negative electroactive material includes a particle defining a core region that includes silicon, silicon-containing alloys, tin-containing alloys, and combinations thereof. A porous, elastomeric multilayer coating is disposed on a surface of the core region that includes a first carbonaceous layer and a second porous elastomeric layer. The second porous elastomeric layer includes siloxane and a plurality of electrically conductive particles. The multilayer coating is capable of reversibly elongating from a contracted state to an expanded state in at least one direction to minimize or prevent fracturing of the plurality of negative electroactive material particles during lithium ion cycling.

    INFLATABLE POUCH DESIGNS FOR ELECTROCHEMICAL CELLS AND METHODS OF FORMING THE SAME
    9.
    发明公开
    INFLATABLE POUCH DESIGNS FOR ELECTROCHEMICAL CELLS AND METHODS OF FORMING THE SAME 审中-公开

    公开(公告)号：US20230268589A1

    公开(公告)日：2023-08-24

    申请号：US17678406

    申请日：2022-02-23

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Meng JIANG

    IPC: H01M50/105 ,  H01M50/133 ,  H01M50/124

    CPC classification number: H01M50/105 ,  H01M50/133 ,  H01M50/1245

    Abstract: The present disclosure provides a thermally stable battery pouch that includes one or more films assembled together to define a cavity, where a stack including a plurality of electrochemical cells and an electrolyte are disposed in the cavity. The cavity is at least about 50% larger than the stack. In certain variations, the thermally stable battery pouch further includes an elastic material film that coats at least a portion of an exterior surface of the one or more films. A method for forming the thermally stable battery pouch is also provided. The method includes adding the electrolyte to a precursor battery pouch via an opening, where the precursor battery pouch defines the cavity, and sealing the opening of the precursor battery pouch having the electrolyte and the stack disposed therein to form the thermally stable battery pouch.

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