▎ 摘　　要

NOVELTY - Preparation of paper-based flexible graphene film comprises dispersing graphene oxide in solvent and adding 0.5-1 pt. wt. metal oxide to obtain graphene oxide coating liquid; pouring liquid in coating machine, continuous coating on paper-based substrate to obtain film layer and blast oven-drying to obtain paper-based flexible graphene oxide film substrate; oxidizing flexible graphene film in continuous carbon dioxide laser etching machine, graphitizing under inert atmosphere to reduce graphene oxide and repairing structure defect on surface to obtain product. USE - Method for preparing paper-based flexible graphene film. ADVANTAGE - The prepared film is low cost. The method is simple and easy to operate and provides controllable graphene thickness and size.