METHOD OF MANUFACTURING ALL-SOLID STATE SECONDARY BATTERY, ELECTRODE SHEET FOR ALL-SOLID STATE SECONDARY BATTERY, AND METHOD OF MANUFACTURING ELECTRODE SHEET FOR ALL-SOLID STATE SECONDARY BATTERY

Provided is a method of manufacturing an all-solid state secondary battery having a layer configuration in which a positive electrode active material layer, a solid electrolyte layer, and a negative electrode active material layer are laminated in this order, the method comprising: a pre-compression bonding step of laminating a solid electrolyte layer and one of a positive electrode active material layer or a negative electrode active material layer to form a laminate and compressing the laminate to bond the layers, the solid electrolyte layer being formed on a support and including a binder consisting of a polymer and an inorganic solid electrolyte; a step of peeling off the support from the solid electrolyte layer such that 1% to 10 mass % of the solid electrolyte layer that is compressed and bonded to the active material layer remains in the support; and a post-compression bonding step of laminating the solid electrolyte layer from which the support is peeled off and another one of the positive electrode active material layer or the negative electrode active material layer to form a laminate and compressing the laminate to bond the layers. Provided also are an electrode sheet for an all-solid state secondary battery that is manufactured in the manufacturing method, and a method of manufacturing the electrode sheet for an all-solid state secondary battery.