▎ 摘　　要

NOVELTY - Graphite oxide is added to beaker containing deionized water, and ultrasonically dispersed, to obtain graphene oxide dispersion. Vitamin C is added to flask containing deionized water, stirred, purified aniline and hydrochloric acid solution are added, and stirred. The graphene oxide dispersion is added to obtained mixture, stirred, ammonium persulfate solution is added, and stirred. The obtained intermediate product is suction-filtered, and washed. Hydrochloric acid solution is added to the filter cake, polyaniline is fully doped, dried and ground, to obtain composite material. USE - Preparation of nanotube-shaped polyaniline/graphene composite material (claimed). ADVANTAGE - The method enables preparation of nanotube-shaped polyaniline/graphene composite material with uniform particle size and excellent electrochemical property, by simple and environmentally-friendly process. DETAILED DESCRIPTION - 3 g Graphite powder, 270 ml sulfuric acid and 30 ml phosphoric acid are added to a round bottom flask, stirred for 20 minutes, and graphite is pre-oxidized. 18 g Potassium permanganate is added to the flask for 20 minutes or more, reacted at 35 degrees C for 1 hour in an ice water bath, and graphite is re-oxidized. The reaction mixture is cooled to room temperature, 100 ml distilled water is added, reacted at 80 degrees C, and obtained reaction mixture is cooled to less than 40 degrees C. The resultant mixture is added to a 1 L beaker, 100 ml distilled water is added, and cooled to room temperature. The resultant mixture is added to 300 mL beaker containing 15 ml 30% hydrogen peroxide solution, reacted, deionized water and hydrochloric acid are added, centrifuged at speed of 4000 rpm, and washed until resultant product is neutral. The obtained product is subjected to vacuum filtration, and dried at 50 degrees C for 24 hours in a vacuum oven, to obtain graphite oxide. 0.02 g Graphite oxide is added to a beaker containing 50 ml deionized water, and ultrasonically dispersed for 1 hour, to obtain graphene oxide dispersion. Vitamin C is added to flask containing 30 ml deionized water, stirred at room temperature for 0.5 hours, the flask is placed in an ice water bath, 0.5 ml purified aniline and 2 mL hydrochloric acid solution with concentration of 1 mol/L are added, and stirred under ice-cooling conditions for 0.5 hours, to obtain mixture (A). The molar ratio of vitamin C and purified aniline is 4:1, 2:1, 1:1, 0.5:1, 0.25:1 or 0.1:1. The graphene oxide dispersion is added to the mixture (A), and stirred in an ice-water bath for 1 hour, to obtain brown homogeneous mixture (B). An ammonium persulfate solution is added to mixture (B), and stirred in ice-water bath for 12 hours, to obtain intermediate product. The molar ratio of ammonium persulfate and aniline is 1:1. The intermediate product is suction-filtered, and washed using deionized water until neutral. 2 ml Hydrochloric acid solution with concentration of 1 mol/L is added to the filter cake, polyaniline is fully doped, dried at 50 degrees C for 24 hours in a vacuum oven, and ground, to obtain nanotube-shaped polyaniline/graphene composite material.