Preparation method and application of a multifunctional double-layer nanowire layered composite material
A layered composite material and nanowire technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, nickel oxide/nickel hydroxide, etc., can solve the problems of limiting large-scale practical applications, high cost and scarcity , to achieve the effect of high surface capacitance characteristics, high production efficiency and low equipment requirements
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Embodiment 1
[0027] Put 10 mg of graphene oxide in 30 mL of distilled water by ultrasonic, and after ultrasonication for 1 h to form a uniform brown solution, add 30 mg of ascorbic acid, and after ultrasonically stirring evenly, place the cleaned nickel foam in the dispersion, and put it in a water bath for 90 ℃. The samples were deposited at ℃ for 6 hours. After taking out, the surface of the samples was rinsed with deionized water and dried at 60 ℃ for 12 h to obtain rGO / NF.
Embodiment 2
[0029] Put rGO / NF in 1.019g Co(NO 3 ) 2 ·6H 2 A 35mL homogeneous solution formed by mixing O and 1.051g urea was fully reacted in a box furnace at 120°C for 10h to form a CoO nanowire precursor; the precursor was placed in a solution containing 1.5mmol Co(NO 3 ) 2 ·6H 2 O, 1.5 mmol Ni (NO 3 ) 2 ·6H 2 30 mL of homogeneous mixed solution of O, 15 mmol urea and 8 mmol ammonium fluoride was transferred to a polytetrafluoroethylene lining and placed in a 140 ℃ box furnace for reaction, kept for 6 h, and the sample was taken out to obtain a double-layer nanowire precursor. After 400 Annealed at ℃ to obtain layered CoNiO 2 / CoO-140-400 material.
Embodiment 3
[0031] Put rGO / NF in 1.019g Co(NO 3 ) 2 ·6H 2 A 35mL homogeneous solution formed by mixing O and 1.051g urea was fully reacted in a box furnace at 120°C for 10h to form a CoO nanowire precursor; the precursor was placed in a solution containing 1.5mmol Co(NO 3 ) 2 ·6H 2 O, 1.5 mmol Ni (NO 3 ) 2 ·6H 2 30 mL of a homogeneous mixed solution of O, 15 mmol urea and 8 mmol ammonium fluoride was transferred to a polytetrafluoroethylene lining and placed in a 120 ℃ box furnace for reaction, kept for 6 h, and the sample was taken out to obtain a double-layer nanowire precursor. After 400 Annealed at ℃ to obtain layered CoNiO 2 / CoO-120-400 material.
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