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    FREE-STANDING GEL MEMBRANE FOR ELECTROCHEMICAL CELL
    1.
    发明公开
    FREE-STANDING GEL MEMBRANE FOR ELECTROCHEMICAL CELL 审中-公开

    公开(公告)号：US20240234811A1

    公开(公告)日：2024-07-11

    申请号：US18131172

    申请日：2023-04-05

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Zhe LI ,  Qili SU ,  Meiyuan WU ,  Yong LU ,  Haijing LIU

    IPC分类号： H01M10/0565 ,  H01M10/0562

    CPC分类号： H01M10/0565 ,  H01M10/0562 ,  H01M2300/0085 ,  H01M2300/0091

    摘要： An electrochemical cell that cycles lithium ions includes a positive electrode that includes a positive electroactive material, a negative electrode that includes a negative electroactive material, and a free-standing separating layer disposed between the positive electrode and the negative electrode. The free-standing separating layer includes a gel membrane that includes a polymer host and a liquid electrolyte and an integrated structural component disposed within the gel membrane. The integrated structural component may be selected from the group consisting of: a plurality of solid-state electrolyte particles, a nonwoven material, and a combination thereof.

    SELF-HEATING BIPOLAR SOLID-STATE BATTERY
    3.
    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

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

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

    摘要： 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
    4.
    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

    申请人： GM Global Technology Operations LLC

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

    IPC分类号： H01M10/0565 ,  H01M10/0585

    摘要： 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.

    MODIFIED BINDERS FOR ELECTROCHEMICAL CELLS THAT CYCLE LITHIUM IONS AND METHODS OF FORMING THE SAME
    7.
    发明公开
    MODIFIED BINDERS FOR ELECTROCHEMICAL CELLS THAT CYCLE LITHIUM IONS AND METHODS OF FORMING THE SAME 审中-公开

    公开(公告)号：US20240113300A1

    公开(公告)日：2024-04-04

    申请号：US18070090

    申请日：2022-11-28

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Yong LU ,  Meiyuan WU ,  Dewen KONG ,  Haijing LIU

    IPC分类号： H01M4/62 ,  C08L27/18 ,  H01M10/0525

    CPC分类号： H01M4/623 ,  C08L27/18 ,  H01M10/0525 ,  C08L2207/53

    摘要： The present disclosure provides a modified binder for use in an electrochemical cell that cycles lithium ions. The modified binder includes one or more agglomerates of polytetrafluoroethylene nanoparticles, where each of the polytetrafluoroethylene nanoparticles includes a polytetrafluoroethylene core and a polymeric shell that is disposed on exposed surfaces of the core. The polymeric shell can include a polymer selected from the group consisting of: polyethylene oxide, polyglycidyl methacrylate, polyvinylidene difluoride, fluoride-hexafluoropropylene, polypropylene oxide, polyacrylonitrile, polymethacrylonitrile, polymethyl methacrylate, derivatives and co-polymers, and combinations thereof, and in certain instances, also a humidity tolerant lithium salt. The polytetrafluoroethylene core can have a first particle size ranging from about 10 nanometers to about 500 nanometers, the polymeric shell can have an average thickness ranging from about 10 nanometers to about 1,000 nanometers, and each of the one or more agglomerates can have an average size ranging from about 100 micrometers about 1,000 micrometers.

    POLYMER BLEND GEL ELECTROLYTES
    9.
    发明公开
    POLYMER BLEND GEL ELECTROLYTES 审中-公开

    公开(公告)号：US20230282881A1

    公开(公告)日：2023-09-07

    申请号：US17884335

    申请日：2022-08-09

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Bradley R. FRIEBERG ,  Zhe LI ,  Yong LU

    IPC分类号： H01M10/0565 ,  H01M10/0525 ,  H01M50/46

    CPC分类号： H01M10/0565 ,  H01M10/0525 ,  H01M50/46 ,  H01M2300/0082

    摘要： A polymer gel electrolyte for an electrochemical cell that cycles lithium ions is provided. The polymer gel electrolyte includes a polymeric blend comprising polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) and polyvinylidene fluoride (PVDF), wherein a mass ratio of PVDF-HFP to PVDF is greater than or equal to about 1.5:1 to less than or equal to about 19:1 in the polymeric blend. Further, one or more plasticizers are included selected from the group consisting of: ethylene carbonate (EC), diethylene carbonate (DEC), vinyl ethylene carbonate (VEC), dimethylene carbonate (DMC), ethylmethylene carbonate (EMC), propylene carbonate (PC), gamma butyrolactone (GBL), diethylene glycol dimethyl ether (Diglyme), triethylene glycol dimethyl ether (Triglyme), tetraethylene glycol dimethyl ether (Tetraglyme), Triethyl Phosphate (TEP), 1-butyl-3-methylimidazolium-bis(trifluoromethylsulfonyl)imide (BMIM-TFSI), 1-Ethyl-3-methylimidazolium-bis(trifluoromethylsulfonyl)imide (EMI-TFSI), alkyl pyrrolidinium bis(trifluoromethanesulfonyl)imide (PY-TFSI), piperidinium bis(trifluoromethanesulfonyl)imide (PP-TFSI), N-alkyl-N-butylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PYRA-TFSI), and combinations thereof. The polymer gel electrolyte also includes one or more lithium salts.