▎ 摘　　要

NOVELTY - A graphene carbon fiber composition (C1) comprises a composition for fabricating carbon fiber; and graphene powder, where the composition for fabricating carbon fiber comprises polyacrylonitrile (PAN)-based carbon fiber, pitch-based carbon fiber, and/or rayon-based carbon fiber, and the graphene powder serves as a seed of graphite to be formed during carbon fiber fabricating processes. USE - For fabricating high-performance carbon fiber (or graphite fiber). ADVANTAGE - The graphene carbon fiber composition fabricates high-performance carbon fiber with lowering a graphitization temperature. The high-performance carbon fiber indicates carbon fiber having excellent physical property i.e. tensile modulus of greater than or equal to 350 GPa. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for fabricating high-performance carbon fiber involving a mixing step to fabricate a graphene suspension by mixing a composition for fabricating carbon fiber with graphene powder to form the composition (C1), and dispersing the composition (C1) in a solvent; fiberization step to fabricate fibers by controlling a viscosity of the graphene suspension; stabilization step stabilize the fibers by heating at 200-400 degrees C under atmosphere; and heat treatment step of fabricating nano ribbon-shaped graphite by graphitizing the stabilized fibers at a temperature less than 2500 degrees C, where the graphene powder included in the composition (C1) serves as a seed of graphite to be formed during high-performance carbon fiber fabricating processes.