SULFIDE SOLID ELECTROLYTE AND METHOD FOR THE PREPARATION THEREOF, ALL-SOLID-STATE LITHIUM SECONDARY BATTERY, AND APPARATUS CONTAINING THE SAME

The present application discloses a sulfide solid electrolyte and a method for the preparation thereof, an all solid state lithium secondary battery, and an apparatus containing the all solid state lithium secondary battery. The sulfide solid electrolyte is obtained by compounding at least LiS, PSand a dopant MSO, wherein M is one or more selected from Na, K, Ba and Ca, and 1≤x≤2.