▎ 摘　　要

NOVELTY - A laminated body comprises base material layer containing modified graphene oxide which is modified with sulfonic acids having vinyl group, and coating layer containing fluorine-type polymer which has a sulfonic acid group laminated on greater than or equal to 1 surface of base material layer. USE - A laminated body for use as proton intermediary electrically conductive electrolyte membrane of solid-fuel battery cell (claimed). ADVANTAGE - The laminated body has high proton conductivity. The battery cell including the laminated body can be driven at room temperature, and handling can be improved. Since the interlayer adhesion between the battery cell and the interface is good, the maximum output density of the battery cell can be increased, and a stable output density can be secured. Furthermore, the laminated body can be easily manufactured under a mild condition using a conventional method, allowing for easy manufacture of the battery cell as well. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) manufacture of laminated body which involves film-forming liquid base material layer precursor containing modified graphene oxide obtained by making graphene oxide and sulfonic acids having vinyl group react in the presence of a polymerization initiator and a solvent, and applying liquid coating layer precursor containing fluorine-type polymer which has sulfonic acid group on greater than or equal to 1 surface of obtained base material layer; and (2) solid-fuel battery cell comprising the laminated body as a proton intermediary electrically conductive electrolyte membrane integrated with electrode.