▎ 摘　　要

NOVELTY - Preparing graphene nitride comprises (i) taking graphite as anode and glycine ammonia aqueous solution as electrolyte and electrolyzing, and (ii) preprocessing, filtering, washing and drying. USE - The graphene nitride is useful in energy storage device, preferably super capacitor (all claimed). ADVANTAGE - The method is simple, east to operate, environmentally friendly, economical and suitable for industrial production, and has short production. The graphene nitride has low oxidation degree, small defects and excellent electrochemical performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene nitride prepared by the above method.