▎ 摘　　要

NOVELTY - Iron-cobalt-nickel-hydroxide/reduced graphene oxide composite material is prepared by mixing iron cobalt hydroxide and iron-nickel hydroxide, and has spindle-shaped structure with nanosheets grown on the surface, and size of 3-4 microns. USE - Iron-cobalt-nickel-hydroxide/reduced graphene oxide composite material is used for supercapacitor positive electrode material. ADVANTAGE - The composite material is economically prepared by a simple method without requiring complicated device, high temperature and pressure, and severe experimental conditions, and ensures excellent performance for the super capacitor positive electrode material fusiform structure. DETAILED DESCRIPTION - Iron-cobalt-nickel-hydroxide/reduced graphene oxide (Fe-Co-Ni-OH/rGO) composite material is prepared by mixing iron cobalt hydroxide ((Fe0 .67Co0 .33)OH) and iron-nickel hydroxide (Fe2Ni2(CO3)(OH)8.2H2O), and has spindle-shaped structure with nanosheets grown on the surface, and size of 3-4 microns. An INDEPENDENT CLAIM is included for preparation of iron-cobalt-nickel-hydroxide/reduced graphene oxide composite material, which involves dissolving 1.081 g ferric trichloride hexahydrate in 10 mL dimethylformamide solvent to obtain solution (I), dissolving 0.464 g fumaric acid in 10 mL of dimethylformamide solvent to obtain solution (II), uniformly mixing solution (I) and (II) transferring mixture into reaction kettle, reacting for 4 hours at 100degrees Celsius, cleaning obtained product, drying in vacuum for 12 hours to obtain MIL-88A precursor material, dispersing MIL-88A precursor material in 4 ml ethanol solvent to obtain solution (III), dissolving nickel nitrate hexahydrate, cobalt nitrate hexahydrate and 0.1 g urea in 6 ml deionized water to obtain solution (IV), uniformly mixing solutions (III) and (IV), transferring mixture into reaction kettle, carrying out thermal reaction on mixture by using a solvent, washing and drying mixture to obtain iron-cobalt-nickel hydroxide composite material, dispersing MIL- 88A precursor material in 4 ml ethanol solvent to obtain a solution (VII), dissolving cobalt nitrate hexahydrate and 0.1 g of urea in 6 ml deionized water to obtain solution (VIII), uniformly mixing the solutions (VII) and (VIII), transferring the mixture into reaction kettle, carrying out thermal reaction on mixture, washing and drying to obtain iron composite material (Fe-Co-OH), dispersing Fe-Co-Ni-OH composite material into aqueous suspension of graphene oxide, adding ascorbic acid into solution, transferring the solution into a reaction kettle for hydrothermal reaction, washing and drying.