▎ 摘　　要

NOVELTY - A suspension liquid containing an oxidized graphene is cast on a substrate (3) to form a cast film (2). The cast film is heated in presence of metal hydride (4) and reduced, to obtain a graphene film. USE - Manufacture of graphene film. ADVANTAGE - The graphene film having large area and high degree of freedom is manufactured, by simple method. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of the apparatus for manufacturing graphene film. Airtight container (1) Cast film (2) Substrate (3) Metal hydride (4) Heater (5)