▎ 摘　　要

NOVELTY - Method for preparing low-defect nitrogen-doped graphene involves (a) pre-nitriding graphite raw material by heat treatment in a nitrogen-containing active atmosphere, (b) stripping the pre-nitrided graphite through chemical oxidation to obtain nitrogen-doped graphene oxide, and (c) pyrolyzing and reducing the nitrogen-doped graphene oxide to obtain the product. USE - The method is useful for preparing low-defect nitrogen-doped graphene. ADVANTAGE - The method controls type and quantity of nitrogen atom doping, is simple in operation, and realizes large-scale production. The nitrogen-doped graphene has fewer defects and high quality.