▎ 摘　　要

NOVELTY - The method involves: taking a conductive substrate as working electrode; putting working electrode, counter electrode and reference electrode to a water dispersion solution of oxidized graphene; and reducing and electrically depositing the oxidized graphene on the surface of the working electrode. USE - Formation method of graphene film used in various applications. Uses include but are not limited to a sensor, a transistor, a transparent electrode, a capacitor, a catalyst, or a composite material. ADVANTAGE - Provides graphene film which has controllable thickness, size, uniformity, continuity and crystallization performance.