All-solid-state battery and manufacturing method therefor
AssigneeLG Energy Solution, Ltd.
InventorsJieun Lee, Youngbok Kim, Yun Kyoung Kim, Donghyeon Kim
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Abstract
The present disclosure relates to an all-solid-state battery and a method for manufacturing same, and more particularly, the performance of the all-solid-state battery can be improved by providing an electrode layer in an electrode adjacent to the sulfide-based solid electrolyte film that is solvent-free, or that contains a non-polar solvent, thereby reducing the interfacial resistance of the sulfide-based solid electrolyte film and the electrode.
Claims12
An all-solid-state battery comprising a positive electrode, a negative electrode, and a sulfide-based solid electrolyte film interposed therebetween,
- wherein a positive electrode active material layer or a negative electrode active material layer included in the positive electrode or the negative electrode is solvent-free, or comprises a non-polar solvent, and
- wherein a dielectric constant of the non-polar solvent is 10 or less.
A method of manufacturing an all-solid-state battery, comprising (a) impregnating a positive electrode active material layer or a negative electrode active material layer contained in the positive electrode or the negative electrode with a non-polar solvent;
- (b) forming a sulfide-based solid electrolyte film by coating a slurry for forming the sulfide-based solid electrolyte film on the positive electrode active material layer or the negative electrode active material layer obtained in step (a) above;
- and
- (c) drying the sulfide-based solid electrolyte film obtained in step (b),
- wherein the non-polar solvent has a dielectric constant of 10 or less.
Dependencies are inferred from the claim text.