▎ 摘　　要

NOVELTY - Graphene wire comprises a catalytic metal, a graphene layer coated on the catalytic metal surface, and a healing metal layer disposed on the graphene layer, where the graphene layer includes a defect portion in which graphene is disconnected. The defect portion is covered with the healing metal layer. USE - Graphene wire used in acoustic apparatus (claimed). ADVANTAGE - The graphene wire covers defects of the graphene layer, and facilitates stable charge transfer or wavelength transfer. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene wire, which involves synthesizing graphene layer on surface of the catalytic metal, and then forming healing metal layer on the graphene layer.