▎ 摘　　要

NOVELTY - The method involves adhering the reduced graphene oxide to the oxide solid electrolyte. A slurry containing the oxide solid electrolyte to which the reduced graphene oxide is attached, a positive electrode active material (87), and a binder to a positive electrode current collector is applied to form a positive electrode active material layer. A slurry containing a negative electrode active material (88), a solid electrolyte, and a binder to a negative electrode current collector is applied to form a negative electrode active material layer. A solid electrolyte layer is formed on the positive electrode active material layer and a negative electrode active material layer is formed on the solid electrolyte layer. USE - Method for producing all-solid secondary battery mounted on next-generation clean energy vehicles such as hybrid vehicles (HEV) e.g. hybrid car, electric vehicles (EV) e.g. electric scooter (from drawings), and plug-in hybrid vehicle, electronic equipment carried by user, and medical equipment. ADVANTAGE - The solid-state battery has high discharge capacity and improved battery efficiency. The liquid leakage and expansion of battery due to vaporization of organic electrolyte solution are prevented. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of the all-solid secondary battery. 81Positive electrode 82Negative Electrode 83Solid Electrolyte layer 87Positive electrode active material 88Negative electrode active material