▎ 摘　　要

NOVELTY - Preparing copper sulfide-graphene polyaniline composite hydrogel comprises (i) adding 0.02 g copper sulfide into hydrochloric acid solution with concentration of 1 M, stirring uniformly, adding aniline monomer, stirring for 30 minutes at 4℃, and marking as solution A; (ii) adding the oxidant into 1 M hydrochloric acid solution with concentration of 1 M, dissolving to obtain solution B; (iii) slowly dropping solution B into A solution, stirring for 6 hours at 4℃, filtering, repeatedly washing by using deionized water and ethanol, and freeze-drying to obtain composite powder C; and (iv) adding 0.03 g composite powder C into graphene oxide dispersion liquid with 2-8 mg/ml concentration of 10, stirring uniformly, adding into a high pressure reaction kettle for hydrothermal reaction at 120-180℃ for 8-12 hours, and using deionized water for soaking the reaction product for 3 days. USE - The method is useful for preparing copper sulfide-graphene polyaniline composite hydrogel used for super capacitor, wear-resistant electronic device, sensor, and energy storage device. ADVANTAGE - The method reduces graphene oxide to generate gel, solves the problem of polyaniline, copper sulfide rate performance is bad, improves the electronic transmission rate, and has better cycle performance and higher specific capacitance, high sensitivity, and is simple without complex device, environmentally-friendly and high efficiency.