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47 条记录 (耗时 0.025 秒)

    PRE-LITHIATING POROUS LAYER FOR ELECTROCHEMICAL CELL AND METHODS OF FORMING THE SAME
    3.
    发明公开
    PRE-LITHIATING POROUS LAYER FOR ELECTROCHEMICAL CELL AND METHODS OF FORMING THE SAME 审中-公开

    公开(公告)号：US20240038962A1

    公开(公告)日：2024-02-01

    申请号：US17875328

    申请日：2022-07-27

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Xingcheng XIAO ,  Sherman H. ZENG ,  Meinan HE

    IPC分类号： H01M4/131 ,  H01M4/1391

    CPC分类号： H01M4/131 ,  H01M4/1391 ,  H01M2004/021

    摘要： An electrochemical cell is provided that includes a first electrode, a second electrode, a separating layer that physically separates the first and second electrodes, and a porous layer disposed between the separating layer and the first electrode. The porous layer includes a porous material having a plurality of pores and a lithiating material that at least partially fills the pores of the plurality. The porous layer can be a continuous coating disposed on a surface of the separating layer opposing the first electrode or a continuous coating disposed on a surface of the first electrode opposing the separating layer. The porous material can include zeolites, aerogels, silicon oxides, porous aluminum oxides, titanium oxides, manganese oxides, and/or magnesium oxides. The lithiating material can include lithium peroxide and can fill between about 30 and about 60% of the pores of the porous material.

    COATED SEPARATORS FOR ELECTROCHEMICAL CELLS AND METHODS OF FORMING THE SAME
    4.
    发明公开
    COATED SEPARATORS FOR ELECTROCHEMICAL CELLS AND METHODS OF FORMING THE SAME 审中-公开

    公开(公告)号：US20230246295A1

    公开(公告)日：2023-08-03

    申请号：US17588707

    申请日：2022-01-31

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Xingcheng XIAO ,  Yifan ZHAO ,  Biqiong WANG ,  Shuru CHEN ,  Mei CAI

    IPC分类号： H01M50/434 ,  H01M50/449

    CPC分类号： H01M50/434 ,  H01M50/449

    摘要： The present disclosure provides a coated separator including a porous separator and a ceramic coating disposed on one or more surfaces thereof. The ceramic coating includes a ceramic material and an additive selected from the group consisting of: lithium nitrate (LiNO3), lithium phosphate (LiPO3), lithium orthophosphate (Li3PO4), lithium difluoro (oxalate) borate (LiDBoB), cyclic sulfone, polysulfide, lithium halide salts, and combinations thereof. In certain variations, the coated separator is prepared by contacting the porous separator with a slurry including the ceramic material and the additive. In other variations, the coated separator is prepared by forming a ceramic coating on one or more surfaces of a porous separator and contacting the porous separator with the additive, for example by immersing, or alternatively, a spraying process.

    THERMAL BARRIER COMPONENT FOR MITIGATING THERMAL RUNAWAY IN BATTERIES
    5.
    发明申请
    THERMAL BARRIER COMPONENT FOR MITIGATING THERMAL RUNAWAY IN BATTERIES 有权

    公开(公告)号：US20230087017A1

    公开(公告)日：2023-03-23

    申请号：US17480085

    申请日：2021-09-20

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Xingcheng XIAO ,  Mei CAI ,  Wei ZENG ,  Aijie CHEN

    IPC分类号： H01M10/658 ,  H01M50/293

    摘要： A thermal barrier component for an electrochemical cell (e.g., a battery) includes a mat, a functional material, and a polymer binder. The mat includes a porous matrix. The functional material is in pores of the porous matrix. The functional material includes an oxide. In certain aspects, the functional material may be a composite material. The polymer binder is in contact with the porous matrix and the functional material. At least one of the porous matrix, the functional material, and the polymer binder is configured to serve as an intumescent carbon source. The oxide is configured to catalyze thermal degradation of the intumescent carbon source to form intumescent carbon at a first temperature. The first temperature is greater than or equal to about 300° C. The thermal barrier component is configured to mitigate thermal runaway in an electrochemical cell. The thermal barrier component may include one or more layers.

    ELECTRODES AND METHODS OF FABRICATING ELECTRODES FOR ELECTROCHEMICAL CELLS BY CONTINUOUS LOCALIZED PYROLYSIS
    8.
    发明申请
    ELECTRODES AND METHODS OF FABRICATING ELECTRODES FOR ELECTROCHEMICAL CELLS BY CONTINUOUS LOCALIZED PYROLYSIS 审中-公开

    公开(公告)号：US20200220154A1

    公开(公告)日：2020-07-09

    申请号：US16239040

    申请日：2019-01-03

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Xingcheng XIAO ,  Hongliang WANG ,  Mark W. VERBRUGGE

    IPC分类号： H01M4/04 ,  H01M4/36 ,  H01M4/62 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525

    摘要： A method of manufacturing a silicon-carbon composite electrode assembly for an electrochemical cell includes forming an electrode by pyrolyzing at least a portion of a polymer in an assembly to form pyrolyzed carbon. The assembly includes an electrode precursor in electrical contact with a current collector. The electrode precursor includes a polymer and an electroactive material. The electroactive material includes silicon. The current collector includes an electrically-conductive material. The pyrolyzing includes directing an energy stream toward a surface of the electrode precursor. The surface is disposed opposite the current collector. The silicon-carbon composite electrode assembly includes the electrode and the current collector. In certain variations, the energy stream includes a laser beam or a plasma jet. In certain aspects, the electrode defines a concentration gradient between a first surface and a second surface.