▎ 摘 要
NOVELTY - An electrode composite film comprises graphene layer (A), carbon paper layer, graphene layer (B) and palladium layer, in order. USE - Electrode composite film is used as cathode in electrochemical reduction for removing bromate (all claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of electrode composite film, which involves using graphene dispersion, reducing agent and plating solution.