▎ 摘　　要

NOVELTY - Large-scale preparation of graphene powder comprises: (i) uniformly stripping graphite oxide into graphene oxide suspension solution; (ii) spaying and drying for atomizing the graphene oxide solution and removing the solvent to obtain graphene oxide powder; (iii) using non-expansion heat treatment method for processing graphene oxide powder in the presence of an inert gas atmosphere or the reducing gas atmosphere to obtain the non-agglomerative graphene powder. USE - The graphene powder is useful as a filler for preparing high strength composite material, conductive composite material, air tightness and fire resistance composite material and a nano device. ADVANTAGE - The graphene powder comprises non-agglomerative intermediate product graphene oxide powder, and has good dispersion in the solvent.