▎ 摘　　要

NOVELTY - A prussian blue-reduced graphene composite film material comprises reduced graphene/prussian blue-reduced graphene with n-layer stacking structure, where n is greater than or equal to 1. USE - Prussian blue-reduced graphene composite film material for a supercapacitor (claimed). ADVANTAGE - The prussian blue-reduced graphene composite film material can be prepared with better mechanical property, better carrier mobility, better electrochemical activity and better capacitive performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a prussian blue-reduced graphene composite film material.