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    Capacitor-assisted electrochemical devices having hybrid structures
    3.
    发明授权
    Capacitor-assisted electrochemical devices having hybrid structures 有权

    公开(公告)号：US11973226B2

    公开(公告)日：2024-04-30

    申请号：US17084782

    申请日：2020-10-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Mengyan Hou ,  Haijing Liu ,  Qili Su ,  Xiaochao Que

    IPC: H01M10/18 ,  H01M4/62 ,  H01M50/531 ,  H01M4/02

    CPC classification number: H01M4/62 ,  H01M50/531 ,  H01M2004/029

    Abstract: A hybrid electrochemical device including at least two electrically connected solid-state electrochemical cells is provided. Each electrochemical cell includes a first outer electrode having a first current collector and a first electroactive layer, a second outer electrode having a second current collector and a second electroactive layer, and one or more intervening electrodes disposed between the electroactive layers. At least one of the intervening electrodes includes one or more capacitor additives. The first outer electrode is electrically connected to at least one of the intervening electrodes in a first electrical configuration. The second outer electrode is electrically connected to at least one of the intervening electrodes in a second electrical configuration. The at least two electrochemical cells are electrically connected in a third electrical configuration. The first and second electrical configurations are the same and the third electrical configuration is distinct from the first and second electrical configurations.

    Graphite foil as an active heating and passive cooling material in a battery pack
    4.
    发明授权
    Graphite foil as an active heating and passive cooling material in a battery pack 有权

    公开(公告)号：US11843088B2

    公开(公告)日：2023-12-12

    申请号：US17394224

    申请日：2021-08-04

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Dave G. Rich ,  Saad Hasan ,  Lyall K Winger ,  Dewen Kong ,  Haijing Liu

    IPC: H01M10/615 ,  C09K5/14 ,  H01M10/0525 ,  H01M10/613

    CPC classification number: H01M10/615 ,  C09K5/14 ,  H01M10/0525 ,  H01M10/613

    Abstract: The present disclosure relates a temperature regulating system including an anisotropic material for use as a heating material or element (e.g., an active heater) and a cooling material or element (e.g., passive cooling) in a battery pack including one or more electrochemical cells. The temperature regulating system includes one or more temperature control elements. Each temperature control element is configured to be in a heat transfer relationship with one or more electrochemical cells so as to heat and/or cool the one or more electrochemical cells of the battery pack. Each temperature control element includes two or more structural elements and one or more anisotropic elements disposed between the two or more structural elements. The temperature control elements may be disposed between the electrochemical cells of the stack, disposed around the electrochemical cells of the stack, or both.

    Solid-state electrolytes and methods for making the same
    7.
    发明授权
    Solid-state electrolytes and methods for making the same 有权

    公开(公告)号：US11600851B2

    公开(公告)日：2023-03-07

    申请号：US16786469

    申请日：2020-02-10

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe Li ,  Yong Lu ,  Xiaochao Que ,  Haijing Liu

    IPC: H01M10/0562 ,  H01M10/0525

    Abstract: The present disclosure relates to solid-state electrolytes and methods of making the same. The method includes admixing a sulfate precursor including one or more of Li2SO4 and Li2SO4.H2O with one or more carbonaceous capacitor materials. The first admixture is calcined to form an electrolyte precursor that is admixed with one or more additional components to form the solid-state electrolyte. When a ratio of the sulfate precursor to the one or more carbonaceous capacitor materials in the first admixture is about 1:2, the electrolyte precursor consists essentially of Li2S. When a ratio of the sulfate precursor to the one or more carbonaceous capacitor materials in the first admixture is less than about 1:2, the electrolyte precursor is a composite precursor including a solid-state capacitor cluster including the one or more carbonaceous capacitor materials and a sulfide coating including Li2S disposed on one or more exposed surfaces of the solid-state capacitor cluster.

    Sulfide-impregnated solid-state battery
    8.
    发明授权
    Sulfide-impregnated solid-state battery 有权

    公开(公告)号：US11539071B2

    公开(公告)日：2022-12-27

    申请号：US16578880

    申请日：2019-09-23

    Applicant: GM Global Technology Operations LLC

    Inventor： Zhe Li ,  Xiaochao Que ,  Haijing Liu ,  Yong Lu ,  Mark W. Verbrugge ,  Meiyuan Wu

    IPC: H01M10/0562 ,  H01M10/0525

    Abstract: A sulfide-impregnated solid-state battery is provided. The battery comprises a cell core constructed by basic cell units. Each unit comprises a positive electrode comprising a cathode layer and a positive meshed current collector comprising a conductive material which is further coated by oxide-based solid-state electrolyte. The cell unit further comprises a negative electrode comprising an anode layer and a negative meshed current collector comprising a conductive material which is further coated by oxide-based solid-state electrolyte. The positive and negative electrodes are stacked together to form the cell unit. The two coated oxide-based solid electrolyte layers are disposed between the positive and negative electrode as dual separators. Such a cell unit may be repeated or connected in parallel or bipolar stacking to form the cell core to achieve a desired battery voltage, power and energy. The cell core comprises a sulfide-based solid-state electrolyte dispersed in the pore structures of cell core.

    Capacitor-assisted solid-state battery with quasi-solid-state electrolyte
    9.
    发明授权
    Capacitor-assisted solid-state battery with quasi-solid-state electrolyte 有权

    公开(公告)号：US11171365B2

    公开(公告)日：2021-11-09

    申请号：US16390782

    申请日：2019-04-22

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe Li ,  Dave G. Rich ,  Haijing Liu ,  Dewen Kong ,  Sherman H. Zeng

    IPC: H01M10/42 ,  H01M10/0565 ,  H01M10/0525 ,  H01M10/0562

    Abstract: A capacitor-assisted, solid-state lithium-ion battery is formed by replacing at least one of the electrodes of the battery with a capacitor electrode of suitable particulate composition for the replaced battery particulate anode or cathode material. The solid-state electrodes typically contain quasi-solid-state electrode material and are separated with a layer of quasi-solid-state electrolyte material. In another embodiment the capacitor anode or cathode particles may be mixed with lithium-ion battery anode or cathode particles respectively. Preferably, the battery comprises at least two positively-charged electrodes and two negatively-charged electrodes, and the location, number and compositions of the capacitor material electrode(s) may be selected to provide a desired combination of energy and power.

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