▎ 摘　　要

NOVELTY - Graphene film prepared by chemical vapor deposition (CVD) is claimed. USE - Used as graphene film. ADVANTAGE - The graphene film has excellent purity, good mechanical properties, high flexibility and electrical conductivity. The method is simple, economical, and fast. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene film comprising (i) cleaning nickel foam, placing in tube furnace containing an argon-hydrogen mixed gas, and (ii) setting temperature, adjusting time, and adopting chemical vapor deposition to obtain grapheme film.