▎ 摘　　要

NOVELTY - Preparing graphene powder by chemical co-precipitation method involves: dispersing garaphene in solvent to obtain graphene suspension liquid which is then freezed to obtain the frozen cake, obtaining flocculation-shaped graphene suspension using the frozen cake, filtering the graphene suspension, flocculating to obtain graphite alkene filter cake, washing, and drying to obtain the graphene powder. USE - For preparing graphene powder by chemical co-precipitation method (claimed). ADVANTAGE - The method prepares graphene suspension with low cost and fastly. The method can keep the same micromorphology of the graphene sample, but not by freezing drying device to dry, so as to greatly reduce the producing cost; reduces the energy consumption and improves the producing efficiency; has wide practical value.