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    ROLL PRESS FOR TAILORED POROSITY ELECTRODES
    1.
    发明申请
    ROLL PRESS FOR TAILORED POROSITY ELECTRODES 有权

    公开(公告)号：US20250096226A1

    公开(公告)日：2025-03-20

    申请号：US18469759

    申请日：2023-09-19

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Daniel Ryan ,  Xiaosong Huang ,  Joel G. Toner ,  Anil K. Sachdev ,  Nicole Ellison

    IPC: H01M4/04 ,  H01M4/02

    Abstract: Aspects of the disclosure include a roll press design for manufacturing tailored porosity electrodes. An exemplary roll press includes a top roller and a bottom roller separated from the top roller by a gap. At least one of the top roller and the bottom roller includes a raised region and an indented region. The raised region includes a first radius and the indented region includes a second radius less than the first radius. The gap includes a distance selected to accommodate a current collector. The current collector includes a bare portion and a coated portion having thereon an electrode material of a first thickness. A difference between the first radius and the second radius is selected, based on the first thickness, to evenly distribute stress across the bare portion and the coated portion of the current collector during a calendering process for forming a tailored porosity electrode.

    Methods for forming vascular components
    7.
    发明授权
    Methods for forming vascular components 有权

    公开(公告)号：US11667091B2

    公开(公告)日：2023-06-06

    申请号：US16701693

    申请日：2019-12-03

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Anthony M. Coppola ,  Nicole Ellison

    IPC: B29C70/66 ,  B29C70/02

    CPC classification number: B29C70/66 ,  B29C70/025

    Abstract: Methods for forming vascular components include providing a composite sacrificial body comprising a first sacrificial material having an outer surface and a second sacrificial material applied to at least a portion of the outer surface, molding a solid substrate around the composite sacrificial body, removing the first sacrificial material by deflagration such that at least a portion of the second sacrificial material remains in the same orientation relative to the substrate as originally molded, and subsequently removing the second sacrificial material by a non-deflagration process to form a vascular component. The second sacrificial material can include a phase change material, a syntactic foam including hollow beads bound together with a polymeric binder or a sintered aggregation of hollow beads, a polymeric foam, a water-soluble resin, or an aerogel. The non-deflagration process can include mechanical pulverization, contacting the second sacrificial material with a solvent or chemical etching agent.

    Method of forming channels within a substrate
    8.
    发明授权
    Method of forming channels within a substrate 有权

    公开(公告)号：US11338512B2

    公开(公告)日：2022-05-24

    申请号：US16701528

    申请日：2019-12-03

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Anthony M. Coppola ,  Nicole Ellison ,  Hugh MacDowell

    IPC: B29C59/08 ,  B29D22/00 ,  B29C64/30 ,  B33Y70/00 ,  B33Y40/20 ,  B29K105/00 ,  B29L31/18

    Abstract: Methods for forming channels within a substrate include molding a sacrificial component directly into the substrate and igniting the sacrificial component to deflagrate of the sacrificial component and form a channel in the substrate. The sacrificial component can include oxidizing agents such as chlorates, perchlorates, nitrates, dichromates, nitramides, and/or sulfates imbedded in a polymeric matrix, and the oxidizing agents can be 30 wt. % to 80 wt. % of the sacrificial component. The sacrificial component can further include one or more of unoxidized metal powder fuels, flammable gas-filled polymeric bubbles, one or more metallocenes and/or one or more metal oxide particles, one or more polymers with nitroester, nitro, azido, and/or nitramine functional groups, one or more burn rate suppressants such as oxamide, ammonium sulphate, calcium carbonate, calcium phosphate, and ammonium chloride, and non-combustible hollow bubbles and/or inert particles. The polymeric matrix can have a limiting oxygen index of less than about 30.

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