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    Multifunctional self-cleaning surface layer and methods of forming the same
    53.
    发明授权
    Multifunctional self-cleaning surface layer and methods of forming the same 有权

    公开(公告)号：US11772086B2

    公开(公告)日：2023-10-03

    申请号：US16410667

    申请日：2019-05-13

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Thomas A Seder ,  James A. Carpenter ,  Gayatri V. Dadheech

    IPC: B01J35/00 ,  B01J31/38 ,  B01J21/06 ,  B01J37/34

    CPC classification number: B01J35/004 ,  B01J21/063 ,  B01J31/38 ,  B01J37/344

    Abstract: A multifunctional self-cleaning surface layer and methods of preparing the multifunctional self-cleaning surface layer are provided. The multifunctional self-cleaning surface layer includes an inorganic matrix including silicon and oxygen; a plurality of photocatalytic active particles distributed within and bonded to the inorganic matrix; and a plurality of nanopores defined within the inorganic matrix in regions corresponding to bonds between the plurality of photocatalytic active particles and the inorganic matrix. Water molecules may be disposed within at least a portion of the plurality of nanopores. In the presence of water and electromagnetic radiation, the plurality of photocatalytic active particles may facilitate a decomposition reaction of any oil or organic residue on the multifunctional self-cleaning surface layer.

    Current collectors having surface structures for controlling formation of solid-electrolyte interface layers
    54.
    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.

    Self-cleaning system for displays using light emitting diodes emitting invisible violet light
    56.
    发明授权
    Self-cleaning system for displays using light emitting diodes emitting invisible violet light 有权

    公开(公告)号：US11579340B2

    公开(公告)日：2023-02-14

    申请号：US17094896

    申请日：2020-11-11

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Thomas A. Seder ,  James A. Carpenter ,  Kai-Han Chang ,  Gayatri V. Dadheech

    IPC: B01J35/00 ,  B01J37/34 ,  G02B1/11 ,  G02B1/18 ,  H01L33/44

    Abstract: A system includes a display. The display includes an array of LEDs covered by a transparent material. The array of LEDs includes a plurality of first, second, third, and fourth LEDs respectively configured to emit red, green, blue, and violet light. The red, green, and blue light from the first, second, and third LEDs is visible to human eye. Violet light from the fourth LEDs is invisible to human eye. The system includes a photocatalytic coating disposed on the transparent material. The photocatalytic coating includes a photo-catalyst responsive to ultraviolet radiation present in sunlight and to the violet light emitted by the fourth LEDs in the array of LEDs. The system includes a controller configured to selectively turn on the fourth LEDs to activate the photo-catalyst in the photocatalytic coating disposed on the transparent material.

    Light-enhanced self-cleaning film system and method of forming same
    57.
    发明授权
    Light-enhanced self-cleaning film system and method of forming same 有权

    公开(公告)号：US11448872B2

    公开(公告)日：2022-09-20

    申请号：US16544435

    申请日：2019-08-19

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： James A. Carpenter ,  Thomas A. Seder ,  Gayatri V. Dadheech

    IPC: G02B27/00 ,  A61L2/232 ,  B08B7/00 ,  B08B17/02 ,  F21V8/00 ,  G02B1/18

    Abstract: A self-cleaning film system includes a substrate and a film. The film includes a monolayer formed from a fluorinated material, and a first plurality of regions disposed within the monolayer and spaced apart from one another such that each of the regions abuts, is surrounded by, and is not covered by the fluorinated material. Each of the regions includes a photocatalytic material. The system may include a wave guide disposed adjacent the substrate. The wave guide includes a first light source configured for emitting a first portion of electromagnetic radiation towards the film having an ultraviolet wavelength of from 10 nm to 400 nm, and a second light source configured for emitting a second portion of electromagnetic radiation towards the film having an infrared wavelength of from 700 nm to 1 mm. A method of forming a self-cleaning film system configured for reducing a visibility of a contaminant is disclosed.

    Thin-film reference electrodes, electrochemical devices including thin-film reference electrodes, and methods of making thin-film reference electrodes
    58.
    发明授权
    Thin-film reference electrodes, electrochemical devices including thin-film reference electrodes, and methods of making thin-film reference electrodes 有权

    公开(公告)号：US11374268B2

    公开(公告)日：2022-06-28

    申请号：US16577934

    申请日：2019-09-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jing Gao ,  Brian J. Koch ,  Zhe Li ,  Alfred Zhang ,  Gayatri V. Dadheech

    IPC: H01M10/48 ,  B05D1/00

    Abstract: A method of making a reference electrode assembly for an electrochemical cell according to various aspects of the present disclosure includes providing a subassembly including a separator layer and a current collector layer coupled to the separator layer. The method further includes providing an electrode ink including an electroactive material, a binder, and a solvent. The method further includes creating a reference electrode precursor by applying an electroactive precursor layer to the current collector layer. The electroactive precursor layer covers greater than or equal to about 90% of a superficial surface area of a surface of the current collector layer. The electroactive precursor layer includes the electrode ink. The method further includes creating the reference electrode assembly by drying the electroactive precursor layer to remove at least a portion of the solvent, thereby forming an electroactive layer. The electroactive layer is solid and porous.

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