▎ 摘　　要

NOVELTY - A nitrogen-doped graphene aqueous slurry is prepared by ultrasonically cleaning nickel foil using diluted hydrochloric acid, ultrasonically cleaning using ethanol, placing cleaned nickel foil in reaction chamber of vacuum chemical vapor deposition device, introducing porphyrin on surface of nickel foil, vacuumizing, heating reaction chamber, reacting nickel foil with porphyrin, introducing ethylene gas into reaction chamber to react, cooling reaction chamber to room temperature to obtain nitrogen-doped graphene powder, dissolving nitrogen-doped graphene powder and dispersant in water, putting in high pressure homogenizer and circulating under pressure. USE - The method is used for preparing nitrogen-doped graphene aqueous slurry.