▎ 摘　　要

NOVELTY - Producing graphene comprises (a) pretreating graphite with chlorosulfonic acid and hydrogen peroxide, (b) dispersion treating the pretreated graphite with N-oxide compound and graphite, (c) mixing the mixture with solvent, and (d) obtaining graphene from the mixture. The yield of graphene is 1-10%. USE - The graphene is useful for producing polypyrrole composite (claimed). ADVANTAGE - The method improves yield of graphene. The composite has improved electrochemical properties. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) graphene produced by the above method; and (2) polypyrrole composite produced by mixing graphene and polypyrrole.