▎ 摘　　要

NOVELTY - Preparation of macroscopic three-dimensional porous structure of graphene, involves: a) preparing disodium ethylenediamine tetraacetate aqueous solution; b) preparing graphene oxide powder; c) adding the step b) prepared graphene oxide powder, in step a) prepared disodium aqueous solution; ultrasonic dispersing uniformly to obtain graphene oxide-ethylene solution; d) tightly sealing the graphene oxide-ethylene solution in step c) in situ at 90-100 degrees C for self-assembly to obtain the three-dimensional graphene hydrogel. USE - For preparation of macroscopic three-dimensional porous structure of graphene (claimed). ADVANTAGE - The method has low equipment operating requirements; is green energy saving; facilitates mass production; and has low production cost.