NOVELTY - The all-solid-state lithium secondary battery has a solid electrolyte layer (13) that is formed between positive and negative electrode layers (11,12) with positive electrode active material (2) and negative electrode active material respectively. The electrode layers contain a glass-like sulfide solid electrolyte material whose interfacial-resistance increase rate is 2 times or less than an oxide active material, and an oxidation front and after oxidation. The electrolyte material is lithium sulfide-phosphorus pentasulfide-silicon disulfide (Li2S-P2S5-SiS2) material.    USE - All-solid-state battery such as all-solid-state lithium secondary battery, all-solid-state magnesium battery, all-solid-state sodium battery, and all-solid-state calcium battery used in all solid-state battery system (claimed). Can also be used in information related equipments, such as personal computer, video camera, mobile telephone, communication apparatuses, as well as communication related equipment, such as motor vehicle industrial world, high output electric vehicle or hybrid vehicle and eco-friendly cars.    ADVANTAGE - Since the fall of the lithium-ion conduction degree accompanying the oxidation of the glass-like sulfide solid electrolyte material by contact with glass-like sulfide solid electrolyte material and an oxide active material can be suppressed, the deterioration of glass-like sulfide solid electrolyte material can be suppressed, thus the stability, output characteristics, battery power generation characteristic and durability are effectively improved in the time of high temperature use.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for all solid-state battery system.    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional view illustrating the electric power generation element of the all-solid-state battery.    Positive electrode active material (2)    Positive electrode layer (11)    Negative electrode layer (12)    Solid electrode layer (13)