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    Capacitor-assisted solid-state battery with quasi-solid-state electrolyte
    11.
    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.

    SULFIDE-IMPREGNATED SOLID-STATE BATTERY
    13.
    发明申请
    SULFIDE-IMPREGNATED SOLID-STATE BATTERY 有权

    公开(公告)号：US20210036360A1

    公开(公告)日：2021-02-04

    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.

    LITHIUM-ION BATTERY WITH WIRE-CONTAINING ELECTRODES
    15.
    发明申请
    LITHIUM-ION BATTERY WITH WIRE-CONTAINING ELECTRODES 审中-公开

    公开(公告)号：US20190288328A1

    公开(公告)日：2019-09-19

    申请号：US16304718

    申请日：2016-06-21

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhiqiang Yu ,  Xiaochao Que ,  Haijing Liu ,  Wentian Gu ,  Meiyuan Wu

    IPC: H01M10/0525 ,  H01M10/04 ,  H01M4/134 ,  H01M4/1391

    Abstract: The electrical performance and structural integrity of lithium battery electrodes, formed of particles of active electrode materials, are improved by mixing electrically conductive wires (metal wires, carbon fibers, and/or the like, including chemically-reduced metal oxide particles) with the particles of active electrode material. For example, copper wires may be intimately mixed with anode particles in porous anode layers which are resin-bonded to sides of a copper current collector foil. And aluminum wires may be mixed with cathode particles in porous cathode layers resin bonded to an aluminum current collector. The wires may be used to increase both the conductivity of electrons and lithium ions and the flexibility of the electrode layer when the electrodes are infiltrated with a solution of a lithium salt electrolyte. The workable thickness of each electrode layer can thus be increased and its performance enhanced to produce a lower cost and better forming battery.

    THERMALLY STABLE NICKEL RICH CATHODES
    17.
    发明申请
    THERMALLY STABLE NICKEL RICH CATHODES 有权

    公开(公告)号：US20250096256A1

    公开(公告)日：2025-03-20

    申请号：US18502302

    申请日：2023-11-06

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Dewen Kong ,  Meiyuan Wu ,  Jingyuan Liu ,  Haijing Liu ,  Mark W. Verbrugge

    IPC: H01M4/525 ,  H01M4/02 ,  H01M4/04 ,  H01M4/505 ,  H01M4/58 ,  H01M4/62

    Abstract: Aspects of the disclosure include systems and methods for manufacturing thermally stable nickel-rich cathodes. An exemplary method can include providing an active material including a plurality of active material particles. The plurality of active material particles include nickel. A nanoparticle slurry additive having a plurality of nanoparticles is provided. The plurality of nanoparticles include one or more of a thermally stable olivine type material, a thermally stable spinel type material, and a thermally stable manganese-nickel dioxide type material. The method includes forming a slurry by mixing the active material and the nanoparticle slurry additive. The plurality of nanoparticles form a thermal inhibitor layer on and in direct contact with a surface of the plurality of active material particles. A free-standing electrode film is formed by calendering the slurry and the free-standing electrode film is laminating to a current collector to define a thermally stable nickel-rich cathode.

    POLYMERIC FLUORINATED GEL ELECTROLYTE
    18.
    发明申请
    POLYMERIC FLUORINATED GEL ELECTROLYTE 有权

    公开(公告)号：US20250062403A1

    公开(公告)日：2025-02-20

    申请号：US18474545

    申请日：2023-09-26

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe Li ,  Haijing Liu ,  Qili Su

    IPC: H01M10/0565 ,  H01M10/0525

    Abstract: A polymeric gel electrolyte for an electrochemical cell, such as a solid-state battery, is provided herein as well an electrochemical cell including the polymeric gel electrolyte. The polymeric gel electrolyte includes a lithium salt comprising sulfur and fluorine, a lithium salt comprising boron, a fluorinated plasticizer, a non-fluorinated plasticizer, and a polymeric host. A w/w ratio of the fluorinated plasticizer to the non-fluorinated plasticizer is 9:1 to 1:9.

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