▎ 摘　　要

NOVELTY - A graphene or graphite oxide solution is applied on the surface of blue steel substrate, and blue steel substrate is dried to obtain graphene sheet. USE - Manufacture of graphene sheet used for coated substrate (claimed). Uses include but are not limited to sensors, batteries, super capacitors, hydrogen storage system and reinforcement fillers of nanocomposites. ADVANTAGE - The method produces graphene sheet having excellent thermal conductivity, mechanical stability, tensile strength, high-electron carrying capacity at room temperature and favorable thermal and mechanical properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for coated substrate, which comprises blue steel substrate and graphene sheet on blue steel substrate.