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    ANODE-FREE SOLID-STATE BATTERY AND METHOD OF BATTERY FABRICATION
    12.
    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.

    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).

    Solid-state battery with solid electrolyte surface topography design
    16.
    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.

    CAPACITOR-ASSISTED LITHIUM-SULFUR BATTERY
    17.
    发明申请
    CAPACITOR-ASSISTED LITHIUM-SULFUR BATTERY 有权

    公开(公告)号：US20220181710A1

    公开(公告)日：2022-06-09

    申请号：US17542294

    申请日：2021-12-03

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe Li ,  Yong Lu ,  Haijing Liu

    IPC: H01M10/42 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/587

    Abstract: The present disclosure relates to capacitor-assisted lithium-sulfur batteries including capacitor electrodes and/or capacitor-based interlayers. For example, a capacitor-assisted lithium-sulfur battery that includes two or more cells is provided. Each cell includes at least two electrodes selected from: a first electrode including a sulfur-containing electroactive material; a second electrode including a negative electroactive material; a first capacitor electrode including a positive capacitor active material; and a second capacitor electrode including a negative capacitor active material. Each electrode may be disposed adjacent to a surface of a current collector and a separator may be disposed between adjacent electrodes so as to provide electrical separation. One of the two or more cells includes the first electrode and the second electrode, and no cell includes both the first electrode and the first capacitor electrode or both the second electrode and the second capacitor electrode. Each cell may further include at least one capacitor-based interlayer.

    SOLID-STATE BATTERY WITH SOLID ELECTROLYTE SURFACE TOPOGRAPHY DESIGN
    18.
    发明申请
    SOLID-STATE BATTERY WITH SOLID ELECTROLYTE SURFACE TOPOGRAPHY DESIGN 有权

    公开(公告)号：US20210057776A1

    公开(公告)日：2021-02-25

    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.

    ELECTRODE WITH ENHANCED STATE OF CHARGE ESTIMATION
    20.
    发明申请
    ELECTRODE WITH ENHANCED STATE OF CHARGE ESTIMATION 有权

    公开(公告)号：US20210036385A1

    公开(公告)日：2021-02-04

    申请号：US16598244

    申请日：2019-10-10

    Applicant: GM Global Technology Operations LLC

    Inventor： Yong Lu ,  Dewen Kong ,  Mengyan Hou ,  Zhe Li ,  Haijing Liu

    IPC: H01M10/48 ,  H01M10/0525 ,  H01M4/1391 ,  H01M4/131

    Abstract: An anode electrode with enhanced state of charge estimation is provided. The anode electrode comprises anode layer and a negative current collector. The negative current collector has a first side and a second side. The anode layer comprises lithium-titanium oxide and a second anode material (e.g. niobium-titanium oxide) disposed on at least one of the first and second sides of the negative current collector with single-layer or layer-by-layer coated structures. The second anode material (e.g. niobium-titanium oxide) can be physically blended with lithium-titanium oxide or be at least partially coated on the surface of lithium-titanium oxide or their combinations. The anode electrode further comprises a binder and a conductive carbon.

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