▎ 摘　　要

NOVELTY - A graphene-cobalt composite fiber comprises graphene fibers and a cobalt layer coated on the surface of the graphene fibers. The surface of the graphene fiber has fold into which the cobalt layer with elongated structure is embedded. USE - Graphene-cobalt composite fiber (claimed). ADVANTAGE - The graphene-cobalt composite fiber has stable structure and excellent electrical properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene-cobalt composite fiber, which involves using graphene dispersion.