▎ 摘　　要

NOVELTY - Preparing a multilayer film comprising metal nanoparticles and a graphene-based material using electrophoretic deposition on a substrate, comprises: (a) electrophoretically depositing a layer of graphene-based material on the substrate; (b) electrophoretically depositing a layer of metal nanoparticles on the layer of graphene-based material; (c) optionally repeating steps (a) and (b) for one or more additional cycles; and (d) electrophoretically depositing a layer of graphene-based material on the layer of metal nanoparticles. USE - The method is useful for preparing multilayer film comprising metal nanoparticles and graphene-based material using electrophoretic deposition on substrate (claimed). ADVANTAGE - The invention provides improved method to prepare graphene-based multilayer film. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are: (1) a multilayer film comprising metal nanoparticles and a graphene-based material obtainable by the method above; or a multilayer film comprising a layer of metal nanoparticles between a first layer of a graphene-based material and a second layer of a graphene-based material; and (2) an electrode comprising the multilayer film, where the graphene-based material is reduced graphene oxide.