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    Lithium alloy-based electrodes for electrochemical cells and methods for making the same
    3.
    发明授权
    Lithium alloy-based electrodes for electrochemical cells and methods for making the same 有权

    公开(公告)号：US11165052B2

    公开(公告)日：2021-11-02

    申请号：US16514633

    申请日：2019-07-17

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Xingcheng Xiao ,  Jin Liu ,  Mei Cai ,  Meinan He ,  Hongliang Wang

    IPC分类号： H01M4/1391 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/62 ,  H01M4/36 ,  H01M4/1395 ,  H01M4/04 ,  H01M4/134 ,  H01M4/02

    摘要： A negative electrode according to various aspects of the present disclosure includes a negative electroactive material and a layer. The negative electroactive material includes a lithium-aluminum alloy. The layer is disposed directly on at least a portion of the negative electroactive material and coupled to the negative electroactive material. The layer includes anodic aluminum oxide and has a plurality of pores. The present disclosure also provides an electrochemical cell including the negative electrode. In certain aspects, the negative electroactive material is electrically conductive and functions as a negative electrode current collector such that the electrochemical cell is free of a distinct negative electrode current collector component. In certain aspects, the layer is ionically conductive and electrically insulating and functions as a separator such that the electrochemical cell is free of a distinct separator component. In various aspects, the present disclosure also provides a method of making the negative electrode.

    ELECTROCHEMICAL CELLS AND METHODS FOR MAKING THE SAME
    4.
    发明公开
    ELECTROCHEMICAL CELLS AND METHODS FOR MAKING THE SAME 审中-公开

    公开(公告)号：US20240222789A1

    公开(公告)日：2024-07-04

    申请号：US18092957

    申请日：2023-01-04

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Xingcheng Xiao ,  Meinan He ,  Mei Cai

    IPC分类号： H01M50/434 ,  H01M10/0525 ,  H01M50/403

    CPC分类号： H01M50/434 ,  H01M10/0525 ,  H01M50/403

    摘要： Electrochemical cells and methods for making electrochemical cells are provided. In one example, an electrochemical cell includes a positive electrode, a negative electrode, and a separator that is disposed between the positive and negative electrodes. The separator is electrically insulating and ionically conductive. An electrolyte is operatively disposed between the positive and negative electrodes and interfaces with the separator to conduct ions between the positive and negative electrodes. A porous ceramic powder impregnated with an intermediate oxidation state alkali metal compound is coupled to one of the separator and the positive electrode.

    Ternary salts electrolyte for a phospho-olivine positive electrode
    5.
    发明授权
    Ternary salts electrolyte for a phospho-olivine positive electrode 有权

    公开(公告)号：US11637321B2

    公开(公告)日：2023-04-25

    申请号：US17158742

    申请日：2021-01-26

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Meinan He ,  Mei Cai

    IPC分类号： H01M10/00 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/38 ,  H01M4/58 ,  H01M10/052

    摘要： An electrochemical cell according to various aspects of the present disclosure includes a positive electrode, a negative electrode, a separator, and an electrolyte. The positive electrode includes a positive electroactive material. The positive electroactive material includes a phospho-olivine compound. The negative electrode includes lithium metal. The separator is between the positive electrode and the negative electrode. The separator is electrically insulating and ionically conductive. The electrolyte includes a ternary salt and a solvent. The ternary salt includes LiPF6, LiFSI, and LiClO4.

    Solvent-free dry powder process to incorporate ceramic particles into electrochemical cell components
    6.
    发明授权
    Solvent-free dry powder process to incorporate ceramic particles into electrochemical cell components 有权

    公开(公告)号：US11557758B2

    公开(公告)日：2023-01-17

    申请号：US16863655

    申请日：2020-04-30

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Jin Liu ,  Xingcheng Xiao ,  Meinan He ,  Mei Cai

    IPC分类号： H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/02

    摘要： Solvent-free methods of making a component, like an electrode, for an electrochemical cell are provided. A particle mixture is processed in a dry-coating device having a rotatable vessel defining a cavity with a rotor. The rotatable vessel is rotated at a first speed in a first direction and the rotor at a second speed in a second opposite direction. The particle mixture includes first inorganic particles (e.g., electroactive particles), second inorganic particles (e.g., ceramic HF scavenging particles), and third particles (e.g., electrically conductive carbon-containing particles). The dry coating creates coated particles each having a surface coating (including second inorganic particles and third particles) disposed over a core region (the first inorganic particle). The coated particles are mixed with polymeric particles in a planetary and centrifugal mixer that rotates about a first axis and revolves about a second axis. The polymeric particles surround each of the plurality of coated particles.