▎ 摘　　要

NOVELTY - The material has a graphene composite material surface formed by combination of ruthenium oxide and carbon nano tube, where mass ratio of the graphene composite material surface is about 0.5 to 1: 0.1 to 1. USE - Graphene composite material for an electrochemical capacitor electrode (claimed). ADVANTAGE - The material has high-capacity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing graphene composite material of an electrochemical capacitor electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating a method for preparing graphene composite material of an electrochemical capacitor electrode. '(Drawing includes non-English language text)'