Mechanochemical synthesis of air-stable hexagonal Li₄SnS₄-based solid electrolytes containing LiI and Li₃PS₄.

ABSTRACT: Sulfide solid electrolytes with high ionic conductivity and high air stability must be developed for manufacturing sulfide all-solid-state batteries. Li₁₀GeP₂S₁₂-type and argyrodite-type solid electrolytes exhibit a high ionic conductivity of ∼10^-2 S cm^-1 at room temperature, while emitting toxic H₂S gas when exposed to air. We focused on hexagonal Li₄SnS₄ prepared by mechanochemical treatment because it comprises air-stable SnS₄ tetrahedra and shows higher ionic conductivity than orthorhombic Li₄SnS₄ prepared by solid-phase synthesis. Herein, to enhance the ionic conductivity of hexagonal Li₄SnS₄, LiI was added to Li₄SnS₄ by m

SUBMITTER: Otoyama M 

PROVIDER: S-EPMC9044197 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature