▎ 摘　　要

NOVELTY - Preparing graphene and derivative powder involves adding aqueous graphene graphene derivative to the liquid nitrogen to give a cured graphene or graphene derivative cured. The cured curable graphene or graphene derivative vacuum is freeze-dried to obtain graphene or graphene derivative powder powder. USE - Method for preparing graphene and derivative powder. ADVANTAGE - The method enables to prepare graphene and derivative powder is effectively solves the phenomenon of irreversible superposition and agglomeration of graphene and its derivatives, and easily dispersed.