▎ 摘　　要

NOVELTY - Method for preparing nitrogen-sulfur co-doped porous graphene by supramolecular template method involves (i) configuring aqueous graphene oxide solution having mass concentration of 1-5 mg/ml, adding N,N-dimethylformamide and ultrasonically dispersing to obtain dispersion solution, where the volume ratio of water to N,N-dimethylformamide is (1:0.5)-(1:2), (ii) sequentially adding the dispersion solution to melamine and thiocyanuric acid under stirring condition at 50-80 degrees C for 1-10 hours, where the molar ratio of melamine to thiocyanuric acid is 1:1, (iii) washing for multiple times with deionized water and drying in an oven to obtain a composite of graphene oxide and melamine thiocyanate, (iv) performing heat treatment to the composite in a tube furnace under an inert atmosphere to obtain nitrogen-sulfur co-doped porous graphene, where the heating rate of tube furnace is 2-5 degrees C/minute, heat treatment temperature is 450-900 degrees C, and heat treatment time is 1-2 hours. USE - Method for preparing nitrogen-sulfur co-doped porous graphene by supramolecular template method. ADVANTAGE - The method is simple and economical, achieves nitrogen and sulfur co-doping while obtaining porous graphene and has excellent electrochemical performance.