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    ANODE-FREE SOLID-STATE BATTERY AND METHOD OF BATTERY FABRICATION
    11.
    发明申请
    ANODE-FREE SOLID-STATE BATTERY AND METHOD OF BATTERY FABRICATION 有权

    公开(公告)号：US20230063684A1

    公开(公告)日：2023-03-02

    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 ,  H01M4/505 ,  H01M4/525

    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.

    Thin-film reference electrodes, electrochemical devices including thin-film reference electrodes, and methods of making thin-film reference electrodes
    13.
    发明授权
    Thin-film reference electrodes, electrochemical devices including thin-film reference electrodes, and methods of making thin-film reference electrodes 有权

    公开(公告)号：US11374268B2

    公开(公告)日：2022-06-28

    申请号：US16577934

    申请日：2019-09-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jing Gao ,  Brian J. Koch ,  Zhe Li ,  Alfred Zhang ,  Gayatri V. Dadheech

    IPC: H01M10/48 ,  B05D1/00

    Abstract: A method of making a reference electrode assembly for an electrochemical cell according to various aspects of the present disclosure includes providing a subassembly including a separator layer and a current collector layer coupled to the separator layer. The method further includes providing an electrode ink including an electroactive material, a binder, and a solvent. The method further includes creating a reference electrode precursor by applying an electroactive precursor layer to the current collector layer. The electroactive precursor layer covers greater than or equal to about 90% of a superficial surface area of a surface of the current collector layer. The electroactive precursor layer includes the electrode ink. The method further includes creating the reference electrode assembly by drying the electroactive precursor layer to remove at least a portion of the solvent, thereby forming an electroactive layer. The electroactive layer is solid and porous.

    ELASTIC BINDING POLYMERS FOR ELECTROCHEMICAL CELLS
    14.
    发明申请
    ELASTIC BINDING POLYMERS FOR ELECTROCHEMICAL CELLS 有权

    公开(公告)号：US20220181629A1

    公开(公告)日：2022-06-09

    申请号：US17542147

    申请日：2021-12-03

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Yong Lu ,  Zhe Li ,  Meiyuan Wu ,  Haijing Liu

    IPC: H01M4/62

    Abstract: The present disclosure relates to an electrochemical cell having an elastic binding polymer that improves long-term performance of the electrochemical cell, particularly when the electrochemical cell includes an electroactive material that undergoes volumetric expansion and contraction during cycling of the electrochemical cell (such as, silicon-containing electroactive materials). The electrochemical cell can include the elastic binding polymer as an electrode additive and/or a coating layer disposed adjacent to an exposed surface of an electrode that includes an electroactive material that undergoes volumetric expansion and contraction and/or a gel layer disposed adjacent to an electrode that includes an electroactive material that undergoes volumetric expansion and contraction. The elastic binding polymer may include one or more alginates or alginate derivatives and at least one crosslinker.

    Solid-state battery having a capacitor-assisted interlayer
    15.
    发明授权
    Solid-state battery having a capacitor-assisted interlayer 有权

    公开(公告)号：US11145922B2

    公开(公告)日：2021-10-12

    申请号：US16684070

    申请日：2019-11-14

    Applicant: GM Global Technology Operations LLC

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

    IPC: H01M4/02 ,  H01M16/00 ,  H01M10/0525 ,  H01M10/0566 ,  H01G11/08 ,  H01G11/10 ,  H01G11/56 ,  H01G11/50 ,  H01G11/06 ,  H01G11/46 ,  H01G11/36

    Abstract: A solid-state battery cell having a capacitor interlayer is disclosed. The solid-state battery includes an anode, a cathode spaced from the anode, a solid-state electrolyte layer disposed between the anode and the cathode, and a capacitor assisted interlayer sandwiched between at least one of (i) the anode and solid-state electrolyte layer, and (ii) the cathode and the solid-state electrolyte layer. The capacitor assisted interlayer comprise at least one of a polymer-based material, an inorganic material, and a polymer-inorganic hybrid material; and a capacitor anode active material or a capacitor cathode active material. The polymer-based material includes at least one of a poly(ethylene glycol) methylether acrylate with Al2O3 and LiTFSI, a polyethylene oxide (PEO) with LiTFSI, and a poly(vinylidene fluoride) copolymer with hexafluoropropylene (PVDF-HFP)-based gel electrolyte. The inorganic material includes a 70% Li2S-29% P2S5-1% P2O5. The polymer-inorganic hybrid material includes a mixture of PEO, LiTFSI, and 75% Li2S-24% P2S5-1% P2O5 (LPOS).

    MICRO-SIZED SECONDARY PARTICLES WITH ENHANCED IONIC CONDUCTIVITY FOR SOLID-STATE ELECTRODE
    17.
    发明申请
    MICRO-SIZED SECONDARY PARTICLES WITH ENHANCED IONIC CONDUCTIVITY FOR SOLID-STATE ELECTRODE 有权

    公开(公告)号：US20210036310A1

    公开(公告)日：2021-02-04

    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

    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.

    SYNERGY FOR IMPROVED THERMAL SPRAY ADHESION
    18.
    发明申请
    SYNERGY FOR IMPROVED THERMAL SPRAY ADHESION 审中-公开

    公开(公告)号：US20190040514A1

    公开(公告)日：2019-02-07

    申请号：US15668027

    申请日：2017-08-03

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Su Jung Han ,  Martin S. Kramer ,  Peng Lu ,  Zhe Li ,  Yucong Wang

    IPC: C23C4/02 ,  C23C4/12 ,  C23C4/06 ,  F02F1/00

    Abstract: A method of coating an inner surface of an engine cylinder bore includes cleaning the surface to remove carbon, resulting in the surface having a maximum of 30 atomic percent carbon, texturing the surface to achieve a developed interfacial area ratio of at least 100%, and heating the surface to between 100-200 degrees Celsius. A thermal spray coating is then adhered to the surface. In some cases, a force of 25+ Newtons scratched across the thermal spray coating is required to remove the thermal spray coating from the surface. Maximum adhesion strength is achieved when the coating is applied to: 1) a heated surface that has 2) an Sdr of at least 100% and 3) a maximum of 20 atomic percent of carbon on the surface. When these three criteria are all present, adhesion strength can be 50 Newtons or more with evidence of metallurgical diffusion/bonding at the interface.

    Solid-state battery with solid electrolyte surface topography design
    20.
    发明授权
    Solid-state battery with solid electrolyte surface topography design 有权

    公开(公告)号：US12278339B2

    公开(公告)日：2025-04-15

    申请号：US16544992

    申请日：2019-08-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Yong Lu ,  Zhe Li ,  Dewen Kong

    IPC: H01M10/058 ,  H01M10/0525

    Abstract: A solid-state battery cell, such as a lithium-ion cell, is assembled with a solid electrolyte layer member positioned between co-extensive surface layers of an anode active layer member and a cathode active material layer member. At least one of the engaging surfaces of the solid electrolyte layer is not flat. It is formed with a topographical pattern comprising recesses in a flat surface, or a surface of projections and recesses, and placed against a compatibly-shaped, mating surface of the anode layer and/or the cathode layer. The re-shaping of the surface(s) of the solid electrolyte layer and adjoining electrode layer(s) is to significantly increase the effective contact area with the facing layer of electrode material and improve the conduction of ions across the interface. A thin film of interlayer material may be placed between the surfaces of the facing cell members with the specially shaped adjacent faces.

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