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    ANODE-FREE SOLID-STATE BATTERY AND METHOD OF BATTERY FABRICATION
    6.
    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

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

    IPC分类号： H01M10/0565 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

    摘要： 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
    8.
    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

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

    IPC分类号： H01M10/48 ,  B05D1/00

    摘要： 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
    9.
    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

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Yong Lu ,  Zhe Li ,  Meiyuan Wu ,  Haijing Liu

    IPC分类号： H01M4/62

    摘要： 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
    10.
    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

    申请人： GM Global Technology Operations LLC

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

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

    摘要： 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).