▎ 摘　　要

NOVELTY - Carbon allotrope having layered structure, where layered structure has layer spacing (d002) of greater than or equal to 3 Angstrom . USE - The carbon allotrope is useful as anode material for secondary battery i.e. lithium ion secondary battery (all claimed). ADVANTAGE - The carbon allotrope has extended interlayer distance; provides anode having excellent energy; and provides secondary battery having excellent capacity and improved long durability characteristics. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) producing carbon allotrope comprising (a) preparing a mixed solution by contacting the carbon allotrope with solution containing cesium ions, and (b) activating the carbon allotrope by heat-treating the mixed solution; and (2) anode material comprising carbon allotrope.