▎ 摘　　要

NOVELTY - Preparing a graphene film involves: (1) adding a mixture of graphene oxide and graphene to deionized water, and ultrasonically dispersing to obtain a graphene solution; (2) adjusting the pH of the graphene solution with an alkaline solution, then adding ferrocene, uniform thermal stirring, washing the thermal-stirred mixture with an acidic mixture, and placing in a container for negative pressure suction filtering to obtain a porous graphene film; and (3) subjecting the porous graphene film to laser engraving reduction, and washing. USE - The method is useful for preparing graphene film. ADVANTAGE - The method is rapid, simple in operation, and less in energy consumption, improves the efficiency and rate of the mixture of graphene oxide and graphene dissolved in water, and provides graphene film, which has excellent mechanical, optical, electrical and thermal performances.