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    GEL POLYMER ELECTROLYTE WITH SULFOLENE ADDITIVE
    8.
    发明公开
    GEL POLYMER ELECTROLYTE WITH SULFOLENE ADDITIVE 审中-公开

    公开(公告)号：US20240014440A1

    公开(公告)日：2024-01-11

    申请号：US17900048

    申请日：2022-08-31

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Qili SU ,  Zhe LI ,  Haijing LIU ,  Lidan XING ,  Lijiao QUAN

    IPC: H01M10/0565

    CPC classification number: H01M10/0565 ,  H01M10/0525

    Abstract: The present disclosure a gel polymer electrolyte for an electrochemical cell that cycles lithium ions. The gel polymer electrolyte includes a polymer host, a liquid electrolyte, and greater than or equal to about 0.1 wt. % to less than or equal to about 10 wt. % of a sulfolene additive. In certain variations, the gel polymer electrolyte also includes greater than or equal to about 0.1 wt. % to less than or equal to about 5 wt. % of an ethylene carbonate additive. The ethylene carbonate additive may be selected from the group consisting of: vinyl ethylene carbonate (VEC), fluoroethylene carbonate (FEC), vinylene carbonate, and combinations thereof. In each instance, the lithium electrolyte may include a first lithium salt, a second lithium salt that is distinct from the first lithium salt, and a third lithium salt that is distinct from the first lithium salt and the second lithium salt.

    Thin Solid-State Electrolyte Having High Ionic Conductivity
    9.
    发明公开
    Thin Solid-State Electrolyte Having High Ionic Conductivity 审中-公开

    公开(公告)号：US20230299342A1

    公开(公告)日：2023-09-21

    申请号：US17884226

    申请日：2022-08-09

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

    IPC: H01M10/0565 ,  H01M10/0525

    CPC classification number: H01M10/0565 ,  H01M10/0525 ,  H01M2300/0082

    Abstract: A free-standing electrolyte layer for use in an electrochemical cell is provided. The free-standing electrolyte layer includes a plurality of solid-state electrolyte particles, a (first) ionic liquid that surrounds each solid-state electrolyte particle of the plurality of solid-state electrolyte particles, and a plurality of polytetrafluoroethylene fibrils that provides a structural framework for the solid-state electrolyte particles. The free-standing electrolyte layer has an ionic conductivity greater than or equal to about 0.1 mS/cm at 40° C., and a thickness greater than or equal to about 5 micrometers to less than or equal to about 500 micrometers. Each of the polytetrafluoroethylene fibrils of the plurality of polytetrafluoroethylene fibrils has an average length of greater than or equal to about 2 micrometers to less than or equal to about 100 micrometers. The electrochemical cell may include one or more electrodes including a (second) ionic liquid and/or plurality of polytetrafluoroethylene (PTFE) fibrils.

    ARGYRODITE SOLID ELECTROLYTES FOR SOLID-STATE BATTERIES AND METHODS OF MAKING THE SAME
    10.
    发明申请
    ARGYRODITE SOLID ELECTROLYTES FOR SOLID-STATE BATTERIES AND METHODS OF MAKING THE SAME 有权

    公开(公告)号：US20230024667A1

    公开(公告)日：2023-01-26

    申请号：US17707524

    申请日：2022-03-29

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

    IPC: H01M10/0562 ,  H01M4/04

    Abstract: The present disclosure provides a method for making a solid-state argyrodite electrolyte represented by Li6PS5X (where X is selected from chloride, bromide, iodine, or a combination thereof) having an ionic conductivity greater than or equal to about 1.0×10−4 S/cm to less than or equal to about 10×10−3 S/cm at about 25° C. The method may include contacting a first suspension and a first solution to form a precursor, where the first suspension is a Li3PS4 suspension including an ester solvent and the first solution is a Li2S and LiX (where X is selected from chloride, bromide, or iodine, or a combination thereof) solution including an alcohol solvent; and removing the ester solvent and the alcohol solvent from the precursor to form the solid-state argyrodite electrolyte.

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