Single-crystal structure Co3O4 nanowire array fiber-shaped electrode material and preparation method thereof
A nanowire array, single crystal structure technology, applied in the direction of polycrystalline material growth, single crystal growth, single crystal growth, etc., can solve the problems of poor conductivity, large volume expansion, limited development, etc., to improve stability, good flexibility sexual effect
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Embodiment 1
[0033] Take 3cm of 200μm Ni wire, first use absolute ethanol to ultrasonically clean it, dry it, and place it in an air atmosphere for calcination at 200°C for 10min to obtain Ni wire with a NiO layer on the surface. Dissolve 0.8g of zinc acetate tetrahydrate in 500mL of absolute ethanol to obtain a pink mixed solution, dissolve the above-mentioned Ni wire in this solution, soak at -5°C for 24h, take it out, and dry it. Take 0.15g cobalt nitrate hexahydrate, 0.06g ammonium fluoride and 0.15g urea, stir and dissolve in 50mL of deionized water and absolute ethanol mixture, wherein the volume ratio of deionized water to absolute ethanol is 15:1, and The Ni wire obtained by the above drying is placed vertically in the reaction kettle, and kept at 120°C for 10h. After the reaction is completed, the Ni wire is taken out, washed with absolute ethanol and deionized water, dried, and placed in an air atmosphere at a rate of 1°C / min. Heating rate, calcination at 300°C for 2 hours to obt...
Embodiment 2
[0035] Take 3 cm of 300 μm Ni wire, first use absolute ethanol to ultrasonically clean it, dry it, and place it in an air atmosphere for calcination at 200°C for 5 minutes to obtain Ni wire with a NiO layer on the surface. Dissolve 1.6g of zinc acetate tetrahydrate in 500mL of absolute ethanol to obtain a pink mixed solution. Dissolve the above-mentioned Ni wire in this solution, soak it at -10°C for 12h, take it out, and dry it. Get 0.075g cobalt nitrate hexahydrate, 0.03g ammonium fluoride and 0.075g urea, stir and dissolve in 50mL of deionized water and absolute ethanol mixture, wherein the volume ratio of deionized water and absolute ethanol is 20:1, and The Ni wire obtained by the above drying is placed vertically in the reaction kettle, and kept at 150°C for 5h. After the reaction is completed, the Ni wire is taken out, washed with absolute ethanol and deionized water, dried, and placed in an air atmosphere at a rate of 1°C / min. Heating rate, calcination at 300°C for 2 h...
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