▎ 摘　　要

NOVELTY - Preparing conductive graphene film comprises (i) adding graphene oxide to deionized water to form a mixed solution, stirring and ultrasonically dispersing the mixture, and removing the bubbles in the mixed solution by vacuuming to obtain a graphene oxide suspension, (ii) placing the graphene oxide suspension in a mold and performing freeze-drying treatment to obtain a graphene oxide macroscopic body having honeycomb structure, and the macroscopic bulk density is 0.0001-0.0500 g/cm3, (iii) cold pressing the graphene oxide macroscopic body, pressing the graphene oxide macroscopic body into a graphene oxide film with a film thickness of 10-100 mu m, and (iv) performing chemical reduction and thermal reduction of the graphene oxide film resulting in a graphene film having film thickness of 10-100 mu m and film density of 0.5-2500 g/m2. USE - The method is useful for preparing conductive graphene film. ADVANTAGE - The method: is simple; and produces high efficiency and large size graphene film products.