▎ 摘　　要

NOVELTY - Producing graphene fiber composite, comprises (a) performing chemical vapor deposition process to synthesize graphene layer on the metal catalyst, (b) placing the metal catalyst and the graphene layer formed on the metal catalyst on a chamber containing the etching and doping composite solution, etching the metal catalyst from the graphene layer, and doping the graphene layer to form a doped graphene layer, (c) separating the doped graphene layer from the etch and doped composite solution, and forming the doped graphene layer into wire-shaped graphene fibers, and (d) performing electroplating process on the surface of the graphene fiber to prepare graphene fiber composite comprising the graphene fiber and a metal particle or metal coating formed on the surface of the graphene fiber. USE - The composite is useful in electronic device and electric wire (claimed).