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    In-situ gelation method to make a bipolar solid-state battery
    31.
    发明授权
    In-situ gelation method to make a bipolar solid-state battery 有权

    公开(公告)号：US12272788B2

    公开(公告)日：2025-04-08

    申请号：US17542299

    申请日：2021-12-03

    Applicant: GM Global Technology Operations LLC

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

    IPC: H01M10/0565 ,  H01M10/0585 ,  H01M4/02

    Abstract: A method for forming a bipolar solid-state battery includes preparing a mixture of gel precursor solution and solid electrolyte. The gel precursor includes a polymer, a first solvent, and a liquid electrolyte. The liquid electrolyte includes a second solvent, a lithium salt, and electrolyte additive. The method includes loading the mixture onto at least one of a first electrode, a second electrode, and a third electrode. Each of the first, second, and third electrodes includes a plurality of solid-state electroactive particles. The method includes removing at least a portion of the first solvent from the mixture to form a gel and positioning one of the first, second, and third electrodes with respect to another of the first, second, and third electrodes. The method includes applying a polymer blocker to a border of the first, second, or third electrodes.

    Self-heating battery
    37.
    发明授权
    Self-heating battery 有权

    公开(公告)号：US11411261B2

    公开(公告)日：2022-08-09

    申请号：US16487914

    申请日：2017-03-22

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhiqiang Yu ,  Haijing Liu ,  Xiaochao Que ,  Dave G. Rich ,  Saad Hasan ,  Meiyuan Wu

    IPC: H01M10/615 ,  H01M4/04 ,  H01M4/66 ,  H01M4/75 ,  H01M4/80 ,  H01M10/0587 ,  H01G11/06 ,  H01M10/0525

    Abstract: Lithium-based and sodium-based batteries and capacitors using metal foil current collectors, coated with porous layers of particles of active electrode materials for producing an electric current, may adapted to produce heat for enhancing output when the cells are required to periodically operate during low ambient temperatures. A self-heating cell may be placed in heat transfer contact with a working cell that is temporarily in a cold environment. Or one or both of the anode current collector and cathode current collectors of a heating cell may be formed with shaped extended portions, uncoated with electrode materials, through which cell current may be passed for resistance heating of the extended current collector areas. These extended current collector areas may be used to heat the working area of the cell in which they are incorporated, or to contact and heat an adjacent working cell.

    ASYMMETRIC HYBRID ELECTRODE FOR CAPACITOR-ASSISTED BATTERY
    38.
    发明申请
    ASYMMETRIC HYBRID ELECTRODE FOR CAPACITOR-ASSISTED BATTERY 有权

    公开(公告)号：US20220181635A1

    公开(公告)日：2022-06-09

    申请号：US17542169

    申请日：2021-12-03

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Dewen Kong ,  Xiaochao Que ,  Meiyuan Wu ,  Haijing Liu

    IPC: H01M4/62 ,  H01M4/04

    Abstract: An asymmetric hybrid electrode for a capacitor-assisted battery includes a current and first and second electroactive portions. The first electroactive portion is on a first surface of the current collector. The first electroactive portion includes a first battery layer. The first battery layer includes a first battery electroactive material and a first binder. The second electroactive portion is on a second surface of the current collector opposite the first surface. The second electroactive portion includes a second battery layer and a capacitive layer. The second battery layer includes a second battery electroactive material and a second binder. The capacitive layer includes a capacitive electroactive material and a third binder. The first and second electroactive portions are asymmetric. The first and second battery electroactive materials are both positive electroactive materials or both negative electroactive materials. The asymmetric hybrid electrode has a capacitor hybridization ratio of 0.01-1%.

    ELASTIC BINDING POLYMERS FOR ELECTROCHEMICAL CELLS
    39.
    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.

    MICRO-SIZED SECONDARY PARTICLES WITH ENHANCED IONIC CONDUCTIVITY FOR SOLID-STATE ELECTRODE
    40.
    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.

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