中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

8 records (took 0.017 seconds)

    Methods of lithiating electroactive materials
    1.
    发明授权
    Methods of lithiating electroactive materials 有权

    公开(公告)号：US11342545B2

    公开(公告)日：2022-05-24

    申请号：US16706331

    申请日：2019-12-06

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jeffrey D. Cain ,  Andrew C. Bobel ,  Nicholas P. Pieczonka ,  Robert D. Schmidt ,  Anil K. Sachdev ,  Mark W. Verbrugge

    IPC: H01M4/04 ,  H01M4/1391 ,  H01M10/0525

    Abstract: The present disclosure relates to electroactive materials for use in electrodes of lithium-ion electrochemical cells and methods of making the same, for example, methods for lithiating electroactive materials. A method of lithiating an electroactive material may include dispersing an electroactive material precursor within a room-temperature electrolyte that includes a lithium-based salt and contacting the electrolyte mixture and a lithium source so as to cause the lithium source to ionize and form lithium ions. The lithium ions may react with the electroactive material precursor to form a fully lithiated electroactive material (e.g., greater than 70% of total lithiation). The method further includes, in certain aspects, electrochemically discharging the fully lithiated electroactive material to form a lithiated electroactive material having an optimized lithiation state (e.g., less than or equal to about 40% of a first lithiation state of the fully lithiated electroactive material).

    BATTERY SEPARATORS COMPRISING HYBRID SOLID STATE ELECTROLYTE COATINGS
    2.
    发明申请
    BATTERY SEPARATORS COMPRISING HYBRID SOLID STATE ELECTROLYTE COATINGS 有权

    公开(公告)号：US20220020974A1

    公开(公告)日：2022-01-20

    申请号：US16928052

    申请日：2020-07-14

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Thomas A. Yersak ,  Fan Xu ,  Robert D. Schmidt ,  Biqiong Wang

    IPC: H01M2/16 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58

    Abstract: A separator includes a porous polymeric separator having an anode side and a cathode side, a cathode-compatible material applied to the cathode side, wherein the cathode-compatible material comprises a polymeric binder and one or more of lithium aluminum titanium phosphate (LATP) particles, lithium lanthanum titanate (LLTO) particles, lithium aluminum germanium phosphate (LAGP) particles, and lithium superionic conductor (LISICON) particles, and an anode-compatible material applied to the anode side, wherein the anode-compatible material comprises lithium lanthanum zirconium oxide (LLZO) particles and a polymeric binder. The polymeric binder of the cathode-compatible material can be polyvinylidene fluoride and the polymeric binder of the anode-compatible material can be polyvinylidene. The polymeric binder of the cathode-compatible material the anode-compatible material can be the polymeric separator. The LLZO particles and the one or more of LATP, LLTO, LAGP, and LISICON particles can have an average particle size of 10 nm to 10 μm.

    ELECTROCHEMICAL CELL MONITORING ASSEMBLY
    5.
    发明申请
    ELECTROCHEMICAL CELL MONITORING ASSEMBLY 有权

    公开(公告)号：US20220238932A1

    公开(公告)日：2022-07-28

    申请号：US17160553

    申请日：2021-01-28

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jing Gao ,  Brian J. Koch ,  Gayatri V. Dadheech ,  Mark W. Verbrugge ,  Alok Warey ,  James R. Salvador ,  Robert D. Schmidt

    IPC: H01M10/48 ,  H01M10/0525 ,  H01M10/42

    Abstract: A monitoring assembly for an electrochemical cell of a secondary lithium battery includes a porous sensory structure and a transducer. The porous sensory structure includes a sensory layer disposed on a major surface of a porous separator and a buffer layer disposed between the sensory layer and a facing surface of a negative electrode layer. The buffer layer electrically isolates the sensory layer from the facing surface of the negative electrode layer. The sensory layer includes an electrically conductive material and is configured to produce a response to an input signal or to a physical stimulus received within the electrochemical cell. The transducer is configured to process the response produced by the sensory layer to generate an output signal indicative of a diagnostic condition within the electrochemical cell.

    METHOD TO IMPROVE IONIC CONDUCTIVITY OF A SOLID ELECTROLYTE IN A BATTERY CELL
    6.
    发明申请
    METHOD TO IMPROVE IONIC CONDUCTIVITY OF A SOLID ELECTROLYTE IN A BATTERY CELL 有权

    公开(公告)号：US20240413386A1

    公开(公告)日：2024-12-12

    申请号：US18330649

    申请日：2023-06-07

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Xingcheng Xiao ,  Robert D. Schmidt ,  Yifan Zhao

    IPC: H01M10/0562

    Abstract: A method to create a garnet-based solid electrolyte separator for a battery cell is provided. The method includes coating a garnet-based material powder, initially including a lithium carbonate layer upon an outer surface of the garnet-based material powder, with aluminum fluoride to create a fluoride-treated garnet-based material powder. The method further includes operating a solid-state reaction upon the fluoride-treated garnet-based material powder, such that the aluminum fluoride reacts with the lithium carbonate layer to create aluminum oxide, carbon dioxide, and lithium fluoride. The solid-state reaction creates a fluoride-treated and solid-state reacted garnet-based material powder including the aluminum oxide and the lithium fluoride. The method further includes sintering the fluoride-treated and solid-state reacted garnet-based material powder including the aluminum oxide and the lithium fluoride. The sintering includes applying pressure upon the fluoride-treated and solid-state reacted garnet-based material powder to densify the powder and create the separator.

    Current collectors having surface structures for controlling formation of solid-electrolyte interface layers
    8.
    发明授权
    Current collectors having surface structures for controlling formation of solid-electrolyte interface layers 有权

    公开(公告)号：US11728490B2

    公开(公告)日：2023-08-15

    申请号：US17237418

    申请日：2021-04-22

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Robert D. Schmidt ,  Gayatri V. Dadheech

    IPC: H01M4/66 ,  H01M10/0562 ,  H01M10/0525

    CPC classification number: H01M4/667 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2220/20 ,  H01M2300/008 ,  H01M2300/0071

    Abstract: The present disclosure provides an electrochemical cell that includes an electrically conductive material layer, a precursor material disposed on or adjacent to a first surface of the electrically conductive material layer, and an electroactive material layer disposed on or adjacent to the precursor material. In certain variations, the precursor material forms a continuous layer and a solid-electrolyte interface layer is disposed on or adjacent to an exposed surface of the electroactive material layer. In other variations, the precursor material forms a plurality of distinct precursor structures disposed on the first surface of the electrically conductive material layer in a predetermined pattern, such that at least a portion of each distinct precursor structure is unobstructed by the electroactive material layer. The distinct precursor structures are configured to form surface structures that chemically attach the solid-electrolyte interface layer and the electrically conductive material layer.

Patent Agency Ranking