▎ 摘　　要

NOVELTY - Preparing high nitrogen-doped graphene comprises (i) taking nitrogen source and carbon source, and dissolving in deionized water, (ii) drying the aqueous solution to obtain mixed white solid, (iii) heating the white solid to 300-600 degrees C, preserving heat for one section time, and at the same time the protecting through inert gas, (iv) heating the mixture to 700-1200 degrees C, keeping the temperature for one time section, at the same protecting through inert gas, cooling the reaction black product to room temperature, collecting product, and grinding to obtain high-nitrogen doped graphene. USE - The method is useful for preparing high nitrogen-doped graphene (claimed). ADVANTAGE - The method: is simple; performs one-step reaction method to obtain nitrogen-doped graphene having high quality via solid phase reaction; and is easy for industrial production. The high nitrogen-doped graphene: can be taken as non-noble metal catalyst; and has good electro-catalytic oxygen reduction activity.