Invention Grant
- Patent Title: Melt spinning methods for forming lithium-metal foils and electrodes of electrochemical devices
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Application No.: US17179547Application Date: 2021-02-19
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Publication No.: US12104258B2Publication Date: 2024-10-01
- Inventor: Michael P. Balogh , Jin Liu , Ryan C. Sekol , Shaomao Xu , Erik D. Huemiller
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Quinn IP Law
- Main IPC: B22D11/06
- IPC: B22D11/06 ; C23C6/00 ; H01M4/04 ; H01M4/38 ; H01M4/66 ; H01M10/0525 ; H01M10/44 ; H01M4/1395

Abstract:
Presented are lithium-metal electrodes for electrochemical devices, systems and methods for manufacturing lithium-metal foils, and vehicle battery packs containing battery cells with lithium-metal anodes. A method of melt spinning lithium-metal foils includes melting lithium (Li) metal stock in an actively heated vessel to form molten Li metal. Using pressurized gas, the molten Li metal is ejected through a slotted nozzle at the base of the vessel. The ejected molten Li metal is directly impinged onto an actively cooled and spinning quench wheel or a carrier sheet that is fed across a support roller underneath the vessel. The molten Li metal is cooled and solidified on the spinning wheel/carrier sheet to form a Li-metal foil. The carrier sheet may be a polymeric carrier film or a copper current collector foil. An optional protective film may be applied onto an exposed surface of the Li-metal foil opposite the carrier sheet.
Public/Granted literature
- US20220267886A1 MELT SPINNING METHODS FOR FORMING LITHIUM-METAL FOILS AND ELECTRODES OF ELECTROCHEMICAL DEVICES Public/Granted day:2022-08-25
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