Solid electrolyte film, method for fabricating the same, and all-solid-state battery including the same
AssigneesLG Energy Solution, Ltd., The Regents of the University of California
InventorsJung Pil LEE, Min Sang Song, Dong Ju Lee, Zheng Chen
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Abstract
The present disclosure relates to a solid electrolyte film, its fabrication method, and an all-solid-state battery including the same. More specifically, the solid electrolyte film comprises a slurry including a sulfide and/or halide-based solid electrolyte, a binder, and a solvent, coated on a substrate and then dried and pressed. By pressing at a temperature equal to or above a glass transition temperature (Tg) of the binder, the packing density of the solid electrolyte film is increased, thereby improving the ionic conductivity.
Claims20
A solid electrolyte film, comprising:
- a solid electrolyte;
- and
- a binder,
- wherein the solid electrolyte includes at least one selected from the group consisting of a sulfide-based solid electrolyte and a halide-based solid electrolyte, and
- wherein the solid electrolyte film has a packing density of 0.81 to 0.99.
A method for fabricating a solid electrolyte film, comprising:
- (S1) mixing a solid electrolyte, a binder, and a solvent to form a slurry;
- (S2) coating the slurry on a substrate and then drying it;
- and
- (S3) pressing a coating layer at a temperature equal to or above a glass transition temperature (Tg) of the binder,
- wherein the solid electrolyte comprises at least one selected from the group consisting of a sulfide-based solid electrolyte and a halide-based solid electrolyte.
Dependencies are inferred from the claim text.