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    METHOD OF, AND APPARATUS FOR, MANUFACTURING ALKALI METAL COATED CURRENT COLLECTORS FOR BATTERIES
    1.
    发明申请
    METHOD OF, AND APPARATUS FOR, MANUFACTURING ALKALI METAL COATED CURRENT COLLECTORS FOR BATTERIES 有权

    公开(公告)号：US20250140776A1

    公开(公告)日：2025-05-01

    申请号：US18497358

    申请日：2023-10-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Daniel RYAN ,  Nicole Ellison ,  Shaomao Xu

    IPC: H01M4/04 ,  B05C5/02 ,  B05C9/04 ,  B05C11/11 ,  B05C13/00 ,  B22D1/00 ,  B22D19/00 ,  C23C26/02 ,  H01M4/38

    Abstract: A method of manufacturing an alkali metal coated current collector for a battery, the method includes melting the alkali metal, removing impurities floating on the surface of the melted alkali metal; applying the purified melted alkali metal to the surface of at least one side of a passing current collector substrate to form a coating on the current collector substrate. A system for manufacturing an alkali metal coated current collector for a battery includes at least one extruder having a melt chamber, an inlet extending to the melt chamber, at least one feed roller in the inlet for feeding alkali metal introduced into the inlet to the melt chamber; a heater for melting alkali metal in the melt chamber; an opening in the chamber for removing impurities floating on the melted alkali metal in the melt chamber; an outlet extending from the melt chamber to a dispensing opening; a reservoir for receiving melted alkali metal; and at least one drive roller for driving a current collector substrate past the reservoir to receive a coating of melted alkali metal.

    X-RAY FLUORESCENCE (XRF) MAPPING FOR ANODE INSPECTION
    5.
    发明公开
    X-RAY FLUORESCENCE (XRF) MAPPING FOR ANODE INSPECTION 审中-公开

    公开(公告)号：US20230170529A1

    公开(公告)日：2023-06-01

    申请号：US17539421

    申请日：2021-12-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Shaomao Xu ,  Michael P. Balogh ,  Daad Bourhan Haddad

    IPC: H01M10/058 ,  H01M10/052 ,  H01M4/134

    CPC classification number: H01M10/058 ,  H01M10/052 ,  H01M4/134

    Abstract: Aspects of the disclosure include leveraging an X-ray fluorescence (XRF) mapping of copper current collectors for non-contact, non-destructive, in-line quality inspections of thin lithium metal anodes. An exemplary method can include receiving an electrode at a detection surface of the XRF detector. The electrode can include the lithium anode on a surface of a current collector. X-rays are passed through the lithium anode and into the current collector and the intensity of characteristic radiation returning from the current collector is measured at the XRF detector. A lithium anode characteristic can be inferred based on the measured intensity of characteristic radiation from the current collector.

    METHOD AND SYSTEM FOR MAKING A THIN LITHIUM METAL ANODE FOR A VEHICULAR BATTERY
    9.
    发明申请
    METHOD AND SYSTEM FOR MAKING A THIN LITHIUM METAL ANODE FOR A VEHICULAR BATTERY 有权

    公开(公告)号：US20220271264A1

    公开(公告)日：2022-08-25

    申请号：US17182654

    申请日：2021-02-23

    Applicant: GM Global Technology Operations LLC

    Inventor： Shaomao Xu ,  Ryan C. Sekol

    IPC: H01M4/04 ,  H01M4/38 ,  H01M4/66

    Abstract: A method of making a lithium metal anode for a battery cell is disclosed. The method comprises providing a current collector 12 comprising metal and having a first side 14. The method further comprises applying a metal oxide layer to the first side 14 of the current collector 12. The metal oxide layer comprises metal oxide for enhanced wettability of the first side 14. The method further comprises loading molten lithium to the metal oxide layer at a set temperature in an inert atmosphere to define a molten lithium layer having a first thickness on the metal oxide layer. The method further comprises reducing the first thickness of the molten lithium layer to a second thickness at the set temperature in the inert atmosphere. The method further comprises cooling the molten lithium layer to solidify the molten lithium layer in the inert atmosphere, defining a solid lithium layer on the metal oxide layer.

    CALENDERED ELECTRODE AND METHOD OF MAKING SAME
    10.
    发明申请
    CALENDERED ELECTRODE AND METHOD OF MAKING SAME 有权

    公开(公告)号：US20220069273A1

    公开(公告)日：2022-03-03

    申请号：US17007102

    申请日：2020-08-31

    Applicant: GM Global Technology Operations LLC

    Inventor： Erik D. Huemiller ,  Nicholas P. Irish ,  Ryan C. Sekol ,  Dmitrity Bruder ,  Shaomao Xu ,  Jin Liu

    IPC: H01M4/04 ,  H01M4/66 ,  H01M10/058

    Abstract: A method of making a calendered electrode for a battery cell comprises introducing a coated electrode having a first surface extending thereover. The coated electrode has a predetermined density of active materials for ion transport. The method further comprises selectively modifying the coated electrode by patterning the first surface to define a patterned electrode having a first portion and a second portion. After the step of selectively modifying, the method further comprises compressing the patterned electrode by calendering the first surface to provide the first portion having a first density of active materials and the second portion having a second density of active materials. The second density is greater than the first density to define the calendered electrode having a spatial variation of active material density.

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