▎ 摘　　要

NOVELTY - Production of graphene powder involves heat-treating a graphitizable polymer film having a thickness of 10-200 microns at more than 2000 degrees C, forming a heat-treated film having turbostratic graphitic structure, shearing the heat-treated film along a plane parallel to major surface of the heat-treated film, and forming a particulate having a thickness of less than 100 nm. USE - Production of graphene powder (claimed). ADVANTAGE - The method enables efficient production of graphene powder with high specific surface area, aspect ratio, and purity, by economical process. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of turbostratic heat-treated graphitizable polymer. Individual graphene plane (10) Aligned stack (12)