▎ 摘　　要

NOVELTY - Nitrogen-doped graphene electrode comprises a metal electrode and a nitrogen-doped graphene enriched on the surface of the metal electrode, where the nitrogen atoms and the carbon atoms in the graphene exist in a covalently bonded form, and the processing method involves (a) adding graphite oxide to an alcohol solvent and performing ultrasonic stirring to obtain a uniformly dispersed graphene oxide alcohol solution, (b) adding a metal salt solution and performing ultrasonic stirring, (c) inserting two metal electrodes in a gap in the mixed solution, accessing a direct current voltage, electrifying, stopping, enriching graphene oxide on the upper surface of the negative electrode of the metal electrode, pulling out the metal electrode and drying to obtain graphene oxide electrode and (d) placing the graphene oxide electrode into a container containing a mixed solution of aqueous ammonia and water, placing the container at 80-150 degrees C to prepare the nitrogen-doped graphene electrode. USE - As nitrogen-doped graphene electrode. ADVANTAGE - The nitrogen-doped graphene electrode has high conductivity and excellent electrochemical stability. DETAILED DESCRIPTION - Nitrogen-doped graphene electrode comprises a metal electrode and a nitrogen-doped graphene enriched on the surface of the metal electrode, where the nitrogen atoms and the carbon atoms in the graphene exist in a covalently bonded form, the metal electrode is a nickel foil, a copper foil or an aluminum foil electrode, and the processing method involves (a) adding graphite oxide to an alcohol solvent and performing ultrasonic stirring for 1-2 hours to obtain a uniformly dispersed graphene oxide alcohol solution, (b) adding a metal salt solution to the graphene oxide alcohol solution and performing ultrasonic stirring for 30-60 minutes to obtain a uniformly mixed solution, (c) inserting two metal electrodes in a gap in the mixed solution, accessing a direct current voltage of 60-90 V on the two metal electrodes, electrifying for 20-40 minutes, stopping energizing, enriching graphene oxide on the upper surface of the negative electrode of the metal electrode, pulling out the metal electrode of the surface-enriched graphene oxide from the mixed solution and drying to obtain graphene oxide electrode, where the metal electrode is a nickel foil, a copper foil or an aluminum foil electrode and (d) placing the graphene oxide electrode into a container containing a mixed solution of aqueous ammonia and water in a volume ratio of 3:1, placing the container at 80-150 degrees C for 5-8 hours to prepare the nitrogen-doped graphene electrode.