▎ 摘　　要

NOVELTY - A graphene-copper composite fiber material comprises pure graphene fiber and copper layer coated with pure graphene fiber. The surface of graphene fiber has fold. The copper layer has elongated structure embedded in the fold. USE - Graphene-copper composite fiber material (claimed). ADVANTAGE - The graphene-copper composite fiber material has improved electrical property, stable fiber structure and no hole defect. The composite fiber material has no change in conductivity even when one hundred times. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for production of graphene-copper composite fiber material.