▎ 摘　　要

NOVELTY - A graphene-manganese composite fiber comprises manganese layer having elongated structure embedded on the pleats of pure graphene fiber. USE - Graphene-manganese composite fiber (claimed). ADVANTAGE - The graphene and manganese composite fiber is a closely packed crystal without hole defects, which greatly improves the electrical properties of the material. Fiber structure is stable, and conductivity does not change even on bending the fiber 100 times. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene-manganese composite fiber, which involves using graphene oxide fiber, plating groove as cathode, manganese rod as anode, manganese sulfate and concentrated sulfuric acid.