▎ 摘　　要

NOVELTY - Preparation of three-dimensional graphene involves mixing polyhydric sugar alcohol, metal salt and ammonium chloride, transferring the mixture to a crucible and placing the crucible in a tube furnace, calcining at high-temperature in a protective atmosphere of nitrogen, washing with acid, and washing with deionized water. USE - Preparation of three-dimensional graphene (claimed). ADVANTAGE - The method is simple, and enables preparation of three-dimensional graphene having special porous structure.