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    Micro-sized secondary particles with enhanced ionic conductivity for solid-state electrode
    2.
    发明授权
    Micro-sized secondary particles with enhanced ionic conductivity for solid-state electrode 有权

    公开(公告)号：US11575120B2

    公开(公告)日：2023-02-07

    申请号：US16598237

    申请日：2019-10-10

    Applicant: GM Global Technology Operations LLC

    Inventor： Mengyan Hou ,  Zhe Li ,  Qili Su ,  Xiaochao Que ,  Meiyuan Wu

    IPC: H01M4/36 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/02

    Abstract: An electrode including micro-sized secondary particle (MSSP) with enhanced ionic conductivity for solid-state battery is provided. The MSSP comprises a cathode particle and a solid-state electrolyte. The cathode particle is at least partially coated by solid-state electrolyte. The lithium ion transport inside the micro-sized secondary particles is increased by the incorporation of solid-state electrolyte. The electrode can be prepared by casting the slurry comprising MSSP, another electrolyte, binders, and conductive additives on the current collector. The current collector is comprised of a conductive material. The current collector has a first side and a second side. The electrode active material layer is disposed on one of the first and second sides of the current collector.

    Methods of making sulfide-impregnated solid-state battery
    3.
    发明授权
    Methods of making sulfide-impregnated solid-state battery 有权

    公开(公告)号：US11217826B2

    公开(公告)日：2022-01-04

    申请号：US16578872

    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: H01M10/0585 ,  H01M10/0562 ,  H01M10/0525

    Abstract: A method of making the sulfide-impregnated solid-state battery is provided. The method comprises providing a cell core that is constructed by cell unit. The cell core is partially sealed into the packaging such as the Al laminated film and metal can. The method further comprises introducing a sulfide solid-state electrolyte (S-SSE) precursor solution in the cell core, the S-SSE precursor solution comprises a sulfide solid electrolyte and a solvent. The method further comprises evaporating the solvent from the cell core to dry the cell core to solidify the sulfide-based solid-state electrolyte within the cell core and pressurizing the cell core to densify the solid sulfide-base electrolyte within the cell core. The cell core is then fully sealed.

    METHODS OF MAKING SULFIDE-IMPREGNATED SOLID-STATE BATTERY
    4.
    发明申请
    METHODS OF MAKING SULFIDE-IMPREGNATED SOLID-STATE BATTERY 有权

    公开(公告)号：US20210036373A1

    公开(公告)日：2021-02-04

    申请号：US16578872

    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: H01M10/0585 ,  H01M10/0562 ,  H01M10/0525

    Abstract: A method of making the sulfide-impregnated solid-state battery is provided. The method comprises providing a cell core that is constructed by cell unit. The cell core is partially sealed into the packaging such as the Al laminated film and metal can. The method further comprises introducing a sulfide solid-state electrolyte (S-SSE) precursor solution in the cell core, the S-SSE precursor solution comprises a sulfide solid electrolyte and a solvent. The method further comprises evaporating the solvent from the cell core to dry the cell core to solidify the sulfide-based solid-state electrolyte within the cell core and pressurizing the cell core to densify the solid sulfide-base electrolyte within the cell core. The cell core is then fully sealed.

    THERMALLY STABLE NICKEL RICH CATHODES
    5.
    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.

    CAPACITOR ASSISTED BIPOLAR BATTERY
    8.
    发明申请
    CAPACITOR ASSISTED BIPOLAR BATTERY 有权

    公开(公告)号：US20210028481A1

    公开(公告)日：2021-01-28

    申请号：US16523324

    申请日：2019-07-26

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Mengyan Hou ,  Haijing Liu ,  Mark W. Verbrugge ,  Qili Su ,  Meiyuan Wu

    IPC: H01M10/04 ,  H01M10/0525 ,  H01M4/36 ,  H01G11/32 ,  H01G11/46

    Abstract: A bipolar battery may comprise first, second, and third bipolar electrodes that are physically and electrically isolated from one another by intervening non-liquid electrolyte layers. Each of the bipolar electrodes may comprise a bipolar current collector including a first electroactive material layer connected to a first side thereof and a second electroactive material layer connected to a second side thereof. Each electroactive material layer may comprise at least one of: (i) a lithium ion battery positive electrode material, (ii) a lithium ion battery negative electrode material, and/or (iii) a capacitor electrode material. At least one of the electroactive material layers comprises a capacitor electrode material.

    LITHIUM ION ELECTROCHEMICAL DEVICES HAVING EXCESS ELECTROLYTE CAPACITY TO IMPROVE LIFETIME
    10.
    发明申请
    LITHIUM ION ELECTROCHEMICAL DEVICES HAVING EXCESS ELECTROLYTE CAPACITY TO IMPROVE LIFETIME 审中-公开

    公开(公告)号：US20190067729A1

    公开(公告)日：2019-02-28

    申请号：US15689059

    申请日：2017-08-29

    Applicant: GM Global Technology Operations LLC

    Inventor： Zhiqiang Yu ,  Meiyuan Wu ,  Xiaochao Que ,  Fei Pan ,  Sherman H. Zeng

    IPC: H01M10/052 ,  H01M2/02 ,  H01M4/62

    Abstract: The present disclosure provides an electrochemical device that may include a stack having at least one electrochemical cell having a first electrode, a second electrode, a porous separator, and an electrolyte liquid disposed in the porous separator and optionally disposed in the first electrode, the second electrode, or both the first electrode and the second electrode. The stack has a first volume of electrolyte liquid. The electrochemical device also has an integrated storage region that stores a second volume of electrolyte liquid and is in fluid communication with the plurality of electrochemical cells and is configured to transfer the electrolyte liquid into the plurality of electrochemical cells, wherein the second volume of electrolyte liquid is at least about 3% of the first volume. Methods of increasing lifetime of the electrochemical device are also provided.

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