▎ 摘　　要

NOVELTY - A high-conductive carbon fiber (1) has multilayer graphene structure (2) in which the graphene (2a) separated mutually is joined on the surface. USE - High-conductive carbon fiber is used for manufacturing filament for cable used for power transmission (all claimed). ADVANTAGE - The light-weight high-conductive carbon fiber has low resistance, excellent strength, and is environment friendly. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) filament, which is formed by providing high-conductive carbon fiber on a sheath; (2) cable, which is obtained by bundling the filament; (3) manufacture of high-conductive carbon fiber, which involves immersing carbon fiber as raw material in liquid gallium at 600-1500 degrees C by supplying carbon fiber continuously; (4) manufacture of filament; and (5) manufacture of cable. DESCRIPTION OF DRAWING(S) - The drawing shows sectional view of structure of high-conductive carbon fiber. High-conductive carbon fiber (1) Graphene (2) Multilayer graphene structure (2a)