All-solid-state battery

An all-solid-state battery comprising:

• a laminated body provided with a cathode current collecting layer, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collecting layer in this order, and
• a restraining member that applies a restraining pressure to the laminated body in a laminated direction;
• wherein
• a PTC layer containing a conductive material, an insulating inorganic substance, and a polymer, is provided in at least one of a position between the cathode active material layer and the cathode current collecting layer, and a position between the anode active material layer and the anode current collecting layer;
• a content of the insulating inorganic substance in the PTC layer is 10 volume % or more and 40 volume % or less;
• a proportion of a particle size D90 of the insulating inorganic substance, D90, to a thickness of the PTC layer, TPTC, regarded as D90/TPTC is 0.6 or more and 1.0 or less;
• the solid electrolyte layer contains inorganic solid electrolyte materials as a solid electrolyte material;
• and
• the restraining pressure is 0.1 MPa or more and 100 MPa or less.