▎ 摘　　要

NOVELTY - The method involves applying nitrogen doped graphene dispersion liquid containing nitrogen doped graphene, anion dye and solvent, on the surface of nitrogen doped graphene dispersing film. The nitrogen doped graphene dispersion liquid contains nitrogen doped graphene and the anionic dye in the mass ratio of 1 to 400:1. The solvent comprises water or organic solvent and the anionic dye includes orange, eosin, Congo red, erythrosine, aniline black, bitter acid, any one of or more than two of the combination of acid fuchsin. USE - Method for preparing nitrogen doped graphene dispersing film used in energy storage device such as flexible and non flexible super-capacitor, flexible lithium ion battery, or fuel battery (all claimed) used in electronic devices, sensors, biological analysis devices, etc. ADVANTAGE - The technique is simple, low in cost, has short reaction time, high efficiency and non-toxic, so the environment is not polluted, and a product having good, three-dimension structure is obtained. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical representation of the method for preparing nitrogen doped graphene dispersing film. (Drawing includes non-English language text)