Preparation method for cobalt-nickel oxide composite material as supercapacitor electrode material
A technology of cobalt-nickel oxide and supercapacitors, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve problems such as easy to cause danger, achieve cheap prices, increase specific capacitance, and good electrochemical stability Effect
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[0027] Example 1
[0028] (1) Weigh 2.5mmol nickel acetate tetrahydrate (C 4 H 6 NiO 4 ·4H 2 O) and 2.5 mmol of cobalt acetate tetrahydrate (C 4 H 6 CoO 4 ·4H 2 0) be dissolved in the mixed solution that 10mL ethylene glycol and 36mL water form, stir for 20 minutes, nickel acetate is completely dissolved, then add 0.005g glucose, then continue to stir for 10 minutes to obtain mixed solution:
[0029] (2) pour the above-mentioned mixed solution into the polytetrafluoroethylene hydrothermal reactor, keep 80% filling degree, put the hydrothermal reactor into the blast drying oven, react at 180 ° C for 16 hours, then cool the reaction kettle to room temperature.
[0030] (3) The product obtained by centrifugation was washed with deionized water and ethanol respectively, and dried; the dried sample was placed in a muffle furnace and calcined at 450 ° C for 2 hours; the final sample obtained was supercapacitor cobalt-nickel oxidation Object electrode material.
[0031] The...
Example Embodiment
[0033] Example 2
[0034] (1) take by weighing 3mmol nickel acetate tetrahydrate (C 4 H 6 NiO 4 ·4H 2 O) and 4 mmol of cobalt acetate tetrahydrate (C 4 H 6 CoO 4 ·4H 2 0) be dissolved in the mixed solution that 23mL ethylene glycol and 23mL water form, stir 10 minutes, nickel acetate is completely dissolved, then add 0.010g glucose, then continue to stir for 20 minutes, make mixed solution;
[0035] (2) pour the above-mentioned mixed solution into the polytetrafluoroethylene hydrothermal reactor, keep 80% filling degree, put the hydrothermal reactor into the blast drying box, react at 160 ° C for 24 hours, then cool the reaction kettle to room temperature.
[0036] (3) The product obtained by centrifugation was washed with deionized water and ethanol respectively, and dried; the dried sample was placed in a muffle furnace and calcined at 450 ° C for 1 hour; the final sample obtained was supercapacitor cobalt-nickel oxidation Object electrode material.
Example Embodiment
[0037] Example 3
[0038] (1) take by weighing 2mmol nickel acetate tetrahydrate (C4 H 6 NiO 4 ·4H 2 O) and 3 mmol of cobalt acetate tetrahydrate (C 4 H 6 CoO 4 ·4H 2 0) be dissolved in the mixed solution that 30mL ethylene glycol and 16mL water form, stir 30 minutes, nickel acetate is completely dissolved, then add 0.005g glucose, then continue to stir for 20 minutes to obtain mixed solution;
[0039] (2) pour the above-mentioned mixed solution into the polytetrafluoroethylene hydrothermal reactor, keep 80% filling degree, put the hydrothermal reactor into the blast drying oven, react at 180 ° C for 12 hours, and then cool the reaction kettle to room temperature.
[0040] (3) The product obtained by centrifugation was washed with deionized water and ethanol respectively, and dried; the dried sample was placed in a muffle furnace and calcined at 450 ° C for 3 hours; the final sample obtained was supercapacitor cobalt-nickel oxidation Object electrode material.
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