▎ 摘　　要

NOVELTY - Method for bottom-up preparation of three-dimensional graphene, involves (a) fully physically mixing bisamino-containing heterocyclic compound, sodium chloride and dehydrated alcohol to obtain a blend of heterocyclic compound containing diamino and sodium chloride, and (b) keeping the blend under inert gas at 130-250degrees Celsius for 0.5-2 hours, heating at greater than or equal to900degrees Celsius for 0.5-1.5 hours, cooling and post-treating to obtain the product. USE - The method is useful for preparing three-dimensional graphene from bottom to top. ADVANTAGE - The method reduces production cost of graphene, simplifies production process, and prepares graphene powder material with high quality, low cost and large-scale production.