▎ 摘　　要

NOVELTY - Preparing thin film containing graphene and/or graphene oxide, comprises: (a) dispersing graphene and/or graphene oxide sol in a solvent to prepare a dispersion liquid containing graphene and/or graphene oxide of 0.01-20 mg/ml concentration; (b) adopting wire rod coating method on the dispersion liquid to form an uniform wet film on a substrate, where the diameter of the wire used in the wire rod coating method is 0.01-2 mm; and (c) evaporating the solvent from the wet film. USE - The method is useful for preparing thin film containing graphene and/or graphene oxide (claimed). ADVANTAGE - The method ensures fast preparation speed and economical use of the liquid. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for the thin film containing graphene and/or graphene oxide, prepared by the above mentioned method. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the thin film containing graphene and/or graphene oxide.