▎ 摘　　要

NOVELTY - A nitrogen-doped graphene preparation method involves preparing a graphite raw material, and utilizing urea as a reducing agent. The graphite raw material is oxidized and dispersed with solvent (2 mg/ml). The graphene oxide solution is added with mass concentration of urea (20-50%), stirred and mixed uniformly to obtain a mixed solution of graphene oxide and urea, where the volume ratio of urea and graphene oxide solution is 8-12:1. The mixture is subjected to a hydro-thermal reaction with graphene at 80-200 degrees C to obtain a finished product. USE - Method for preparing nitrogen-doped graphene. ADVANTAGE - The method enables preparing nitrogen-doped graphene with better performance, in a simple, short reactive time, highly efficient, cost-effective, and energy-saving manner. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart illustrating a method for preparing nitrogen-doped graphene.'(Drawing includes non-English language text)'