▎ 摘　　要

NOVELTY - A composite material comprises a structure comprising two or more layers including graphene fragment layer (A), metal foil layer (B) and graphene fragment layer in order. The graphene fragment layer comprises graphene fragments uniformly spread on the metal foil layer. USE - Composite material is used for improving electroconductivity of metal (claimed). ADVANTAGE - The composite material has excellent conductivity performance under the bending condition, and ensures the tensile strength of the composite material, bending performance, and high and low graphene fragment content cannot realize the performance. The graphene fragment layer comprises graphene fragments uniformly paved on the metal foil layer on the graphene fragments, so that the conductivity of the conventional metal material at least improves more than 18% and keeping the conductive of the bent after the normal condition is almost the same. The conductivity or the condition of conductivity sudden drop and unstable is reduced. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for improving electroconductivity of metal. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the composite material. Graphene fragment layer (A ) Metal foil layer (B)