▎ 摘　　要

NOVELTY - Preparing three dimensional graphene by direct extrusion 3D printing comprises dispersing graphene, and dispersant in ethanol to obtain graphene suspension, mixing thickening agent and the graphene suspension, heating in a water bath at 70-90 degrees C for 1-2 hours to obtain the graphene slurry, transferring graphene slurry into the print forming device, and obtaining three dimensional graphene according to three dimensional model layer-by-layer printing. USE - The method is useful for preparing three dimensional graphene by direct extrusion 3D printing (claimed). ADVANTAGE - The method has quick forming speed, short period and large-scale potential. The graphene has porous three-dimensional, and periodic structure. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram of the preparation of three dimensional graphene (Drawing includes non-English language text).