▎ 摘　　要

NOVELTY - A carbon nitride preparing method involves preparing graphene-like structure carbon nitride, adding potassium hydroxide, allowing carbon nitride to change from nano-sheet structure to nano-wire structure, dialysis treatment to remove excess hydroxide ions, finally, lyophilization to remove water to obtain three-dimensional carbon nitride gas condensation rubber structure, after treatment, mixing poly(3,4-ethylenedioxythiophene) polystyrene sulfonate: poly(styrenesulfonate) and carbon nitride, removing solvent water by freeze drying to obtain a three-dimensional carbon nitride doped poly(3,4-ethylenedioxythiophene) polystyrene sulfonate: poly(styrenesulfonate) aerogel structure and preparing the energy storage device electrode by compressing, cutting and encapsulating the carbon nitride doped poly(3,4-ethylenedioxythiophene) polystyrene sulfonate: poly(styrenesulfonate) /foam nickel electrode material. USE - Method for preparing carbon nitride. ADVANTAGE - The method enables preparing carbon nitride with enhanced specific capacitance of super capacitor and cycle efficiency and high ratio surface area, in simple manner. DETAILED DESCRIPTION - A carbon nitride preparing method involves preparing graphene-like structure carbon nitride by calcination urea method, adjusting molecular structure size of graphene-carbon nitride and thickness of microscopic layer structure, treatment of carbon nitride, adding potassium hydroxide, allowing carbon nitride to change from nano-sheet structure to nano-wire structure, dialysis treatment to remove excess hydroxide ions, finally, lyophilization to remove water to obtain three-dimensional carbon nitride gas condensation rubber structure, after treatment, mixing poly(3,4-ethylenedioxythiophene) polystyrene sulfonate: poly(styrenesulfonate) and carbon nitride, removing solvent water by freeze drying to obtain a three-dimensional carbon nitride doped poly(3,4-ethylenedioxythiophene) polystyrene sulfonate: poly(styrenesulfonate) aerogel structure and preparing the energy storage device electrode by compressing, cutting and encapsulating the carbon nitride doped poly(3,4-ethylenedioxythiophene) polystyrene sulfonate: poly(styrenesulfonate)/foam nickel electrode material.