▎ 摘　　要

NOVELTY - A three-dimensional graphene/polyaniline array supercapacitor electrode material preparing method involves preparing three-dimensional graphene. The three-dimensional graphene is cleaned and soaked into concentrated nitric acid solution to obtain a three-dimensional graphene slight acidification product, which is placed in an aniline solution. The ammonium persulfate solution heated into the aniline solution under ice bath condition, and slowly stirred to react under ice bath condition to obtain three-dimensional graphene/polyaniline array composite material, which is cleaned and dried. USE - Method for preparing a three-dimensional graphene/polyaniline array supercapacitor electrode material. ADVANTAGE - The method enables preparing the electrode material with high specific surface area, high performance, uniform distribution of polyaniline, complete graphene structure and improved electrochemical performance, in a simple manner. DETAILED DESCRIPTION - A three-dimensional graphene/polyaniline array supercapacitor electrode material preparing method involves preparing three-dimensional graphene by placing a foam nickel as a template in a tube furnace, using argon and hydrogen as a carrier gas, increasing the temperature of the tube furnace from room temperature to 900-1100 degrees C and maintaining for 30-60 min. The temperature of 900-1100 degrees C to the furnace at a methane rate of 10-20 sccm for 5-10 min, and cooling the tube furnace at a rate of 80-110 degrees C/min to room temperature to obtain graphene-coated foamed nickel. The graphene-coated foamed nickel is cut into blocks of area r1 cm2 and 4 mass% polymethyl methacrylate solution is dropped into the graphene per square centimeter at 20 degrees C for 30-60 min, cured and dried. The resultant product is immersed in 3-4 mol/L hydrochloric acid solution at 60-90 degrees C for 3-12 h, to remove the foam nickel, and in the hot acetone solution to remove the polymethyl methacrylate, and repeatedly washed with deionized water to obtain three-dimensional graphene. The three-dimensional graphene is cleaned and soaked into concentrated nitric acid solution for 2-18 h to obtain a three-dimensional graphene slight acidification product, which is placed in an aniline solution for 1-3 h, to contact the aniline monomer completely with the three-dimensional graphene. The ammonium persulfate solution heated into the aniline solution under ice bath condition, and slowly stirred for 30-60 s, to react under ice bath condition for 0-24h to obtain three-dimensional graphene/polyaniline array composite material. The composite material is cleaned with deionized water and placed in a vacuum drying box at 80-100 degrees C for 6-12h to obtain a finished product.