▎ 摘　　要

NOVELTY - The preparation method of nickel subsulfide-reduced graphene oxide-layered double hydroxide supercapcitor material involves (a) dissolving thioacetamide in deionized water, transferring colorless homogeneous liquid to 80 ml PTFE reactor, adding foamed nickel, hydrothermally reacting, cooling, washing nickel foam with water and vacuum-drying to obtain nickel subsulfide-surface grown foamed nickel, (b) adding graphene oxide and ascorbic acid to distilled water, stirring, transferring solution and nickel subsulfide-surface grown foamed nickel to reactor, hydrothermally reacting, cooling, washing nickel foam with distilled water and vacuum-drying to obtain nickel subsulfide and reduced graphene oxide-surface grown foamed nickel, and (c) adding aluminum isopropoxide to distilled water, adjusting the pH of the solution, reacting to obtain a translucent sol, drying, uniformly mixing the powder with water, adding dilute nitric acid solution and continuously stirring to obtain boehmite sol. USE - Method is useful for preparing nickel subsulfide-reduced graphene oxide-layered double hydroxide supercapcitor material. ADVANTAGE - The supercapcitor material has high capacitance and excellent cycle stability. DETAILED DESCRIPTION - The amount of thioacetamide in the step (a) is 25 ml. In the step (a), the dissolving step is carried out under vigorous stirring condition at 25 degrees C and vacuum-drying step is carried out at 60 degrees C for 2 hours. The amount of distilled water in the step (b) is 30 ml. In the step (b), the stirring step is carried out at 25 degrees C and the vacuum-drying step is carried out at 50 degrees C for 3 hours. In the step (c), the reacting step is carried out for 3 hours, the drying step is carried out at 60-100 degrees C and the uniform mixing step is carried out at 80-100 degrees C for 1 hour. The amount of dilute nitric acid solution in the step (c) is 10 ml. The method involves (d) mixing the boehmite sol with nickel subsulfide and reduced graphene oxide-surface grown foamed nickel under vigorous stirring condition, washing the nickel foam with ethanol, drying at room temperature to obtain boehmite sol-containing nickel subsulfide and reduced graphene oxide-surface grown foamed nickel, and (e) placing the foamed nickel in deionized water, adding urea and nickel nitrate, stirring, hydrothermally reacting, washing the foamed nickel with deionized water and drying.