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    Anode-free solid-state battery and method of battery fabrication
    22.
    发明授权
    Anode-free solid-state battery and method of battery fabrication 有权

    公开(公告)号：US11824159B2

    公开(公告)日：2023-11-21

    申请号：US17458903

    申请日：2021-08-27

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe Li ,  Yong Lu ,  Haijing Liu ,  Qili Su ,  Xiaochao Que ,  Mark W. Verbrugge

    IPC: H01M10/0565 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505 ,  H01M4/02

    CPC classification number: H01M10/0565 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

    Abstract: An anode-free solid-state battery includes a cathode layer having transient anode elements and a bare current collector devoid of non-transitory anode material and configured to accept thereon the transient anode elements. The battery also includes a solid-state electrolyte layer defining voids and arranged between the current collector and the cathode layer. The battery additionally includes a gel situated within the solid-state electrolyte and cathode layers, to permeate the electrolyte voids and form a gelled solid-state electrolyte layer, coat the cathode layer, and facilitate ionic conduction of the anode elements between the cathode layer, the solid-state electrolyte layer, and the current collector. Charging the battery diffuses the anode elements from the cathode layer, via the gelled solid-state electrolyte layer, onto the current collector. Discharging the battery returns the anode elements, via the gelled solid-state electrolyte layer, to the cathode layer. A particular method is used to fabricate the anode-free solid-state battery.

    Micro-sized secondary particles with enhanced ionic conductivity for solid-state electrode
    23.
    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.

    Pre-lithiation of anodes for high performance capacitor assisted battery
    25.
    发明授权
    Pre-lithiation of anodes for high performance capacitor assisted battery 有权

    公开(公告)号：US11239469B2

    公开(公告)日：2022-02-01

    申请号：US15995580

    申请日：2018-06-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe Li ,  Xiaochao Que ,  Haijing Liu ,  Jingjing Wu ,  Dave G. Rich ,  Saad Hasan

    IPC: H01M4/80 ,  H01M10/0525 ,  H01G11/06 ,  H01M10/056

    Abstract: A hybrid lithium-ion battery/capacitor cell comprising at least a pair of graphite anodes assembled with a lithium compound cathode and an activated carbon capacitor electrode can provide useful power performance properties and low temperature properties required for many power utilizing applications. The graphite anodes are formed of porous layers of graphite particles bonded to at least one side of current collector foils which face opposite sides of the activated carbon capacitor. The porous graphite particles are pre-lithiated to form a solid electrolyte interface on the anode particles before the anodes are assembled in the hybrid cell. The pre-lithiation step is conducted to circumvent the irreversible reactions in the formation of a solid electrolyte interface (SEI) and preserve the lithium content of the electrolyte and lithium cathode during formation cycling of the assembled hybrid cell. The pre-lithiation step is also applicable to other anode materials that benefit from such pre-lithiation.

    Methods of making sulfide-impregnated solid-state battery
    26.
    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
    27.
    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.

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