▎ 摘　　要

NOVELTY - Nitrogen-doped graphene material prepared by adding graphene oxide in water, ultrasonically dispersing the oxide for 0.5-2 hours to obtain the graphene oxide solution, adding soluble ammonium salt solution into the graphene oxide solution and then continuously ultrasonic dispersing to obtain the mixed solution, removing the mixed solution using a solvent to obtain solid mixture, and performing heat preservation of the solid mixture at 550-1000 degrees C for 0.5-5 hours and then cooling, is claimed. USE - The method is useful for preparing nitrogen-doped graphene material. ADVANTAGE - The method is capable of easily, effectively and economically preparing the nitrogen-doped graphene material with high purity and yield and without pollution.