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US 12,763,360 B2Granted
Removable binder for hot-pressed solid-state electrolyte separators
AssigneeGM Global Technology Operations LLC
InventorsHernando Gonzalez Malabet, Thomas A. Yersak, Aaron Ketchum
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Abstract
A removable binder system to expand application of hot-pressed solid-state electrolyte separator technology is provided, specifically a solid-state electrolyte (SSE) for an electrochemical cell, a method for producing an electrochemical cell and an electrode composite film for an electrochemical cell in order to provide separators that work well with binders such that removing the binders does not affect the electro-molecular properties of the separators.
Claims11
A method for producing an electrochemical cell, the method comprising:
- providing a solid-state electrolyte (SSE) having a separator film, the SSE a glass formed by a glass forming system and has a crystallization activation energy greater than 200 kJ/mol and a glass transition temperature (Tg) greater than 200° C. and comprising a green separator film and a 1-10 wt. % removable binder holding the green film together, the separator film fabricated from the green separator film by a hot-pressing process;
- and
- removing the binder from the green film prior to the hot-pressing process by utilizing a pre-heat treatment;
- wherein a solvent is not utilized prior to the pre-heat treatment.
1 more element
Dependencies are inferred from the claim text.