▎ 摘　　要

NOVELTY - Electrolytic, alkali metal ion mixed conducting sulfide material, is new. USE - Electronic, alkali metal ion mixed conducting sulfide material used as conductive agent, in all-solid-state secondary lithium battery (claimed), and used as power battery of electric automobile and energy storage battery of energy such as solar energy. ADVANTAGE - The electronic, alkali metal ion mixed conducting sulfide material improves the electronic conduction capability of the all-solid-state secondary lithium battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) All-solid-state secondary lithium battery, which comprises positive electrode, negative electrode and all-solid-state electrolyte set between positive electrode and negative electrode, where the positive electrode or/and negative electrode comprises the electronic and alkali metal ion mixed conductive sulfide material. (2) Method for preparing all-solid-state secondary lithium battery involves laminating positive electrode, all-solid-state electrolyte and negative electrode in sequence to form integrated all-solid-state secondary lithium battery with a sandwich structure.