▎ 摘　　要

NOVELTY - An electrode material comprises a carbon fiber having a coaxial stacking morphology of truncated conical tubular graphene layers. Each graphene layer includes a hexagonal carbon layer, and has a large ring end at one end and a small ring end at the other end in an axial direction. A part of the edges of the hexagonal carbon layers is exposed at the large ring ends. USE - For a lithium secondary battery. ADVANTAGE - The material excels in output characteristics, lifetime performance and stability of performance, and has a large electric energy density. It enables an increase in capacity, and excels in conductivity and electrode reinforcement. DESCRIPTION OF DRAWING(S) - The figure is a schematic view of a copy of an enlarged transmission electron micrograph. Hexagonal carbon layers (10) Deposited film (12)