▎ 摘　　要

NOVELTY - The solution claims a graphene film coiled material auxiliary preparation device and an electrolytic device, the device comprises: a first supporting part and a second supporting part, the first supporting part is sleeved on the second supporting part; one side of the first supporting part close to the second supporting part is used for coating the oxidized graphene The auxiliary preparation device can be used for electrochemical reduction of graphene oxide film, for large scale preparation graphene coiled material film, solving the problem of low efficiency and long time consumption in the process of preparing graphene film by electrochemical reduction method. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an electrolytic device.