▎ 摘　　要

NOVELTY - Preparing graphene comprises carrying out intercalation oxidation of graphite to obtain graphite oxide acidic dispersion liquid, then adding reducing agent to the acidic dispersion to give graphene, where the reducing agent is substituted amino phenol or its salt (I). USE - Graphene useful in battery fields, composites, electronics and energy storage materials. ADVANTAGE - The method: does not require washing of dispersion liquid neutral or slightly acidic, utilizes less time and improves production efficiency. DETAILED DESCRIPTION - Preparing graphene comprises carrying out intercalation oxidation of graphite to obtain graphite oxide acidic dispersion liquid, then adding reducing agent to the acidic dispersion to give graphene, where the reducing agent is substituted amino phenol compound of formula (I) or its salts. R1, R2 = H, 1-99C alkyl, benzyl, 1-99C alkenyl, phenyl, 1-99C cycloalkyl, 2-99C cycloalkenyl or 1-99C heteroaryl.