▎ 摘　　要

NOVELTY - Preparing multi-functional double-layer nano-wire layered composite material comprises e. g. (i) placing graphene oxide in distilled water and sonicating for 1 hour to form uniform brown solution, adding ascorbic acid and stirring ultrasonically to obtain dispersion, adding the cleaned foamed nickel into the dispersion, depositing in a water bath at 90 degrees C for 6 hours, taking out, rinsing with deionized water and drying at 60 degrees C for 12 hours, and obtaining foamed nickel rGO/NF loaded with reduced graphene oxide; (ii) dissolving cobalt nitrate hexahydrate and urea in water to form mixed solution A, and placing rGO/NF in mixed solution A, keeping in a box furnace at 120 degrees C for 10 hours, and obtaining cobalt oxide nano-wire precursor; and (iii) dissolving cobalt nitrate hexahydrate, nickel nitrate hexahydrate, urea and ammonium fluoride in water to form uniform mixed solution B, placing the cobalt oxide nano-wire precursor in the mixed solution B. USE - The material is useful for fully hydrolysis or super-capacitor (claimed). ADVANTAGE - The material has rich and easily available raw material reserves, low price, excellent performance, small over-potential, large surface capacitance, high rate performance, and good cycle stability. DETAILED DESCRIPTION - Preparing multi-functional double-layer nano-wire layered composite material comprises (i) placing graphene oxide in distilled water and sonicating for 1 hour to form uniform brown solution, adding ascorbic acid and stirring ultrasonically to obtain dispersion, adding the cleaned foamed nickel into the dispersion, depositing in a water bath at 90 degrees C for 6 hours, taking out, rinsing with deionized water and drying at 60 degrees C for 12 hours, and obtaining foamed nickel rGO/NF loaded with reduced graphene oxide; (ii) dissolving cobalt nitrate hexahydrate and urea in water to form mixed solution A, and placing rGO/NF in mixed solution A, keeping in a box furnace at 120 degrees C for 10 hours, and obtaining cobalt oxide nano-wire precursor; and (iii) dissolving cobalt nitrate hexahydrate, nickel nitrate hexahydrate, urea and ammonium fluoride in water to form uniform mixed solution B, placing the cobalt oxide nano-wire precursor in the mixed solution B, transferring into 120-160 degrees C box furnace, reacting for 6 hours, taking out the sample to obtain double-layer nano-wire precursor, annealing at 300-500?OC, obtaining layered cobalt nickel oxide/cobalt oxide material and recording as cobalt nickel oxide/cobalt oxide-X-Y, where X is the hydrothermal temperature and Y is the annealing temperature. An INDEPENDENT CLAIM is also included for multi-functional double-layer nano-wire layered composite material.