Lithium sulfide powder and method of manufacturing same

Abstract

The present invention relates to a lithium sulfide powder and a method for producing the same. The method comprises a step of mixing a carbon material and a lithium compound to prepare a lithium-carbon compound; a step of filtering a solution obtained by mixing the lithium-carbon compound with a solvent; a step of adding sulfur powder to the filtrate such that the molar ratio of sulfur added to lithium ions is from 0.01 to 0.04; a step of drying the filtrate; and a step of heat-treating the dried material, whereby lithium sulfide having an oxygen content of from 1.0% to less than 3.5% can be produced.

Dependencies are inferred from the claim text.