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22 条记录 (耗时 0.016 秒)

    FABRICATION PROCESS TO MAKE ELECTRODES BY ROLLING
    1.
    发明申请
    FABRICATION PROCESS TO MAKE ELECTRODES BY ROLLING 有权

    公开(公告)号：US20220173370A1

    公开(公告)日：2022-06-02

    申请号：US17539811

    申请日：2021-12-01

    申请人： GM Global Technology Operations LLC

    发明人： Dewen KONG ,  Xiaochao QUE ,  Meiyuan WU ,  Haijing LIU ,  Xiaosong HUANG ,  Mark W. VERBRUGGE

    IPC分类号： H01M4/04 ,  H01M10/058 ,  H01M4/1397 ,  H01M4/30

    摘要： A method of manufacturing an electrode for an electrochemical cell includes providing an admixture including an electroactive material, a binder, and a solvent. The method further includes rolling the admixture to form a sheet and forming a multi-layer stack from the sheet. The method further includes forming an electrode film precursor by performing a plurality of sequential rollings, each including rolling the stack through a first gap. The plurality of sequential rollings includes first and second rollings. In the first rolling, the stack is in a first orientation. In the second rolling, the stack is in a second orientation different from the first orientation. The method further includes forming an electrode film by rolling the electrode film precursor through a second gap less than or equal to the first gap. The method further includes drying the electrode film to remove at least a portion of the solvent.

    DOUBLE-SIDED ELECTRODES AND ELECTROCHEMICAL CELLS INCLUDING THE SAME
    2.
    发明申请
    DOUBLE-SIDED ELECTRODES AND ELECTROCHEMICAL CELLS INCLUDING THE SAME 有权

    公开(公告)号：US20220367848A1

    公开(公告)日：2022-11-17

    申请号：US17690936

    申请日：2022-03-09

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Dewen KONG ,  Haijing LIU ,  Meiyuan WU ,  Xiaochao QUE ,  Sherman H. ZENG ,  Xiaosong HUANG

    IPC分类号： H01M4/137 ,  H01M4/36

    摘要： The present disclosure provides an electrochemical cell that includes a double-sided electrode. The double-sided electrode includes a first electroactive material layer, a second electroactive material layer, and a current collector disposed between the first and second electroactive material layers. Each of the first and second electroactive material layers may include a plurality of electroactive material sub-films and a plurality of buffer layers disposed between adjacent electroactive material sub-films. The electrochemical cell further includes a first single-sided electrode substantially aligned with the first electroactive material layer; a first separator physically separating the first single-sided electrode and the first electroactive material layer; a second single-sided electrode substantially aligned with the second electroactive material layer; and a second separator physically separating the second single-sided electrode and the second electroactive material layer. The current collector may include at least one surface coated with an adhesive layer.

    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.

    SOLID-STATE BIPOLAR BATTERY HAVING THICK ELECTRODES
    6.
    发明申请
    SOLID-STATE BIPOLAR BATTERY HAVING THICK ELECTRODES 有权

    公开(公告)号：US20220166031A1

    公开(公告)日：2022-05-26

    申请号：US17522331

    申请日：2021-11-09

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Zhe LI ,  Xiaochao QUE ,  Haijing LIU ,  Yong LU ,  Meiyuan WU ,  Thomas A. YERSAK ,  Mei CAI

    IPC分类号： H01M4/80

    摘要： The present disclosure provides a solid-state bipolar battery that includes negative and positive electrodes having thicknesses between about 100 μm and about 3000 μm, and a solid-state electrolyte layer disposed between the negative electrode and the positive electrode and having a thickness between about 5 μm and about 100 μm. The first electrode includes a plurality of negative solid-state electroactive particles embedded on or disposed within a first porous material. The second electrode includes plurality of positive solid-state electroactive particles embedded on or disposed within a second porous material that is the same or different from the first porous material. The solid-state bipolar battery includes a first current collector foil disposed on the first porous material, and a second current collector foil disposed on the second porous material. The first and second current collector foils may each have a thickness less than or equal to about 10 μm.

    SELF-HEATING BATTERY
    9.
    发明申请
    SELF-HEATING BATTERY 审中-公开

    公开(公告)号：US20200235444A1

    公开(公告)日：2020-07-23

    申请号：US16487914

    申请日：2017-03-22

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Zhiqiang YU ,  Haijing LIU ,  Xiaochao QUE ,  Dave G. RICH ,  Saad HASAN ,  Meiyuan WU

    IPC分类号： H01M10/615 ,  H01M4/66 ,  H01M4/04 ,  H01M4/80 ,  H01M4/75

    摘要： Lithium-based and sodium-based batteries and capacitors using metal foil current collectors, coated with porous layers of particles of active electrode materials for producing an electric current, may adapted to produce heat for enhancing output when the cells are required to periodically operate during low ambient temperatures. A self-heating cell may be placed in heat transfer contact with a working cell that is temporarily in a cold environment. Or one or both of the anode current collector and cathode current collectors of a heating cell may be formed with shaped extended portions, uncoated with electrode materials, through which cell current may be passed for resistance heating of the extended current collector areas. These extended current collector areas may be used to heat the working area of the cell in which they are incorporated, or to contact and heat an adjacent working cell.

    THICK ELECTRODES FOR ELECTROCHEMICAL CELLS
    10.
    发明申请
    THICK ELECTRODES FOR ELECTROCHEMICAL CELLS 有权

    公开(公告)号：US20220173377A1

    公开(公告)日：2022-06-02

    申请号：US17539901

    申请日：2021-12-01

    申请人： GM Global Technology Operations LLC

    发明人： Dewen KONG ,  Xiaochao QUE ,  Haijing LIU ,  Xiaosong HUANG ,  Mark W. VERBRUGGE ,  Meiyuan WU

    IPC分类号： H01M4/136 ,  H01M4/58 ,  H01M4/66 ,  H01M4/62 ,  H01M10/0525

    摘要： The present disclosure relates to high capacity (e.g., areal capacity greater than about 4 mAh/cm2 to less than or equal to about 50 mAh/cm2) electrodes for electrochemical cells. An example electrode may include a current collector (e.g., meshed current collector) and one or more electroactive material layers having thicknesses greater than about 150 μm to less than or equal to about 5 mm. The electroactive material layers may each include lithium manganese iron phosphate (LiMnxFe1-xPO4, where 0≤x≤1) (LMFP). The electrode may further include one or more electronically conductive adhesive layers disposed between the current collector and the electroactive material layers. The adhesive layers may include one or more polymer components and one or more conductive fillers. The electroactive material layers may be gradient layers, where sublayers closer to the current collector has a lower porosity than layers further from the current collector.