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    POUCH-TYPE BATTERY CELLS AND METHODS FOR MANUFACTURING THE SAME
    21.
    发明申请
    POUCH-TYPE BATTERY CELLS AND METHODS FOR MANUFACTURING THE SAME 审中-公开

    公开(公告)号：US20200176725A1

    公开(公告)日：2020-06-04

    申请号：US16208952

    申请日：2018-12-04

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Fang Dai ,  Hongliang Wang ,  Tengjiao Qi ,  Mei Cai

    IPC: H01M2/02

    Abstract: Disclosed are methods for manufacturing a pouch-type battery cells, and include disposing an anode and a cathode, and optionally a reference electrode, between a first pouch layer and a second pouch layer, and applying heat to the outer corrosion resistant polymer layer of the first pouch layer or the second pouch layer via a laser along a peripheral seal path forming a peripheral seal joining the first pouch layer and the second pouch layer to form a pouch encasing the anode and the cathode, and optionally the reference electrode. Each pouch layer includes an inner heat-activated polymer adhesive layer, a middle aluminum layer, and an outer corrosion resistant polymer layer. The outer corrosion resistant polymer layer of the first pouch layer and/or the second pouch layer can have a laser absorptivity of less than about 10%. The laser can have a wavelength of about 800 nanometers to about 2,000 nanometers.

    Lithium metal battery with hybrid electrolyte system
    22.
    发明授权
    Lithium metal battery with hybrid electrolyte system 有权

    公开(公告)号：US10566652B2

    公开(公告)日：2020-02-18

    申请号：US15677760

    申请日：2017-08-15

    Applicant: GM Global Technology Operations LLC

    Inventor： Fang Dai ,  Li Yang ,  Thomas A. Yersak ,  James R. Salvador ,  Mei Cai

    IPC: H01M10/056 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/38 ,  C07C69/96 ,  C08G65/08

    Abstract: An electrochemical cell includes a negative electrode that contains lithium and an electrolyte system. In one variation, the electrolyte system includes a first liquid electrolyte, a solid-dendrite-blocking layer, and an interface layer. The solid dendrite-blocking layer is ionically conducting and electrically insulating. The dendrite-blocking layer includes a first component and a distinct second component. The dendrite-blocking layer has a shear modulus of greater than or equal to about 7.5 GPa at 23° C. The interface layer is configured to interface with a negative electrode including lithium metal on a first side and the dendrite blocking layer on a second opposite side. The interface layer includes a second liquid electrolyte, a gel polymer electrolyte, or a solid-state electrolyte. The dendrite-blocking layer is disposed between the first liquid electrolyte and the interface layer.

    METHODS OF PREPARING LITHIUM METAL ANODES
    23.
    发明申请
    METHODS OF PREPARING LITHIUM METAL ANODES 审中-公开

    公开(公告)号：US20190319259A1

    公开(公告)日：2019-10-17

    申请号：US15955319

    申请日：2018-04-17

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Michael P. Balogh ,  Hongliang Wang ,  Fang Dai ,  Tengjiao Qi

    IPC: H01M4/1395 ,  H01M4/134 ,  H01M4/66 ,  H01M4/40 ,  H01M4/04

    Abstract: A lithium-based electrode assembly and methods of formation relating thereto are provided. The lithium-based electrode assembly comprises a metal current collector, an electrode comprising lithium metal, and an intermediate layer disposed therebetween. The intermediate layer comprising an intermetallic compound comprising the lithium metal of the electrode and a metal selected from the group consisting of: aluminum, silver, gold, barium, bismuth, boron, calcium, cadmium, carbon, gallium, germanium, mercury, indium, iridium, lead, palladium, platinum, rhodium, antimony, selenium, silicon, tin, strontium, sulfur, tellurium, zinc, and combinations thereof. The method of forming the lithium assembly includes coating a surface of the metal current collector with the intermediate layer; disposing the electrode onto an exposed surface of the intermediate layer; and heating the electrode, the intermediate layer, and the metal current collector to form the lithium intermetallic compound, which joins the metal current collector and the electrode together.

    BATTERY CELL WITH REVERSIBLE VENT VALVE
    30.
    发明申请
    BATTERY CELL WITH REVERSIBLE VENT VALVE 有权

    公开(公告)号：US20240405351A1

    公开(公告)日：2024-12-05

    申请号：US18328125

    申请日：2023-06-02

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Insun Yoon ,  Kyungjae Lee ,  Nader E. Abedrabbo ,  Meinan He ,  Hanho Yun ,  Fang Dai

    IPC: H01M50/333

    Abstract: A battery cell includes a cathode element, an anode element, and an electrolyte disposed in contact with each of the cathode and anode elements. The battery cell also includes a battery cell case constructed from a rigid material and defining an internal chamber configured to house each of the cathode element, the anode element, and the electrolyte. The battery cell case defines at least one aperture configured to provide a gas path between the internal chamber and an external environment. The battery cell additionally includes a reversible, multiple-use valve assembly mounted to the battery cell case and configured to selectively open a fluid flow through the at least one aperture to relieve a gas pressure within the internal chamber exceeding a predetermined pressure threshold.

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