All solid state battery and method for producing same

An all solid state battery comprising a cathode active material layer containing a cathode active material, an anode active material layer containing an anode active material, and a solid electrolyte layer formed between the cathode active material layer and the anode active material layer,

• wherein at least one of the cathode active material layer and the solid electrolyte layer contains a sulfide solid electrolyte material,
• a reaction control portion having two layers of a lithium ion conductive layer having a first lithium ion conductor on an active material side and a stabilization layer having a second lithium ion conductor on a solid electrolyte layer side is formed on a surface of the cathode active material,
• the first lithium ion conductor is an Li-containing compound with a lithium ion conductivity of 1.0×10−7 S/cm or more at normal temperature, and
• the second lithium ion conductor is an Li-containing compound provided with a polyanion structural portion having at least one of B, Si, P, Ti, Zr, Al and W.