Preparation method of porous nano-nickel oxide material
A technology of nano-nickel oxide and nickel nitrate, applied in the direction of nickel oxide/nickel hydroxide, nanotechnology, nanotechnology, etc., can solve the problems of uneven grain size, complex process, heavy pollution, etc., and achieve good dispersion and preparation The effect of simple process and equipment, high specific capacitance
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Embodiment 1
[0030] Dissolve 4.4g of nickel nitrate hexahydrate and 2.4g of ammonium bicarbonate in 30ml of water respectively. The molar ratio of the materials is nickel nitrate hexahydrate: ammonium bicarbonate = 1:2. Stir at room temperature to form transparent solutions respectively. Mix the two, add ammonia water (mass solubility: 25%) to adjust the pH value to 9, continue to stir at room temperature for 30-60 minutes, transfer the mixture to a reaction kettle with a polytetrafluoroethylene liner, and put it into a constant temperature drying Aging in the oven at 180°C for 2 hours, cooling at room temperature, taking out the solid-liquid mixture, filtering, washing with water and ethanol several times, drying in a constant temperature drying oven at 70°C for 12 hours to obtain light green nickel hydroxide powder. Then it was calcined in a muffle furnace at 400° C. for 2 hours under air condition to finally obtain black nickel oxide powder. From the X-ray diffraction pattern, it can be...
Embodiment 2
[0032] Dissolve 4.4g of nickel nitrate hexahydrate and 2.4g of ammonium bicarbonate in 30ml of water respectively. The molar ratio of the materials is nickel nitrate hexahydrate: ammonium bicarbonate = 1:2. Stir at room temperature to form transparent solutions respectively. Mix the two, add ammonia water (mass solubility: 25%) to adjust the pH value to 9, continue to stir at room temperature for 30-60 minutes, transfer the mixture to a reaction kettle with a polytetrafluoroethylene liner, and put it into a constant temperature drying Aging at 160°C for 2 hours in the oven, cooling at room temperature, taking out the solid-liquid mixture, filtering, washing with water and ethanol several times, drying in a constant temperature drying oven at 70°C for 12 hours, to obtain light green nickel hydroxide powder. Then it was calcined in a muffle furnace at 400° C. for 2 hours under air condition to finally obtain black nickel oxide powder. From the X-ray diffraction pattern, it can b...
Embodiment 3
[0034]Dissolve 4.4g of nickel nitrate hexahydrate and 2.4g of ammonium bicarbonate in 30ml of water respectively. The molar ratio of the materials is nickel nitrate hexahydrate: ammonium bicarbonate = 1:2. Stir at room temperature to form transparent solutions respectively. Mix the two, add ammonia water (mass solubility: 25%) to adjust the pH value to 9, continue to stir at room temperature for 30-60 minutes, transfer the mixture to a reaction kettle with a polytetrafluoroethylene liner, and put it into a constant temperature drying Aging in the oven at 140°C for 2 hours, cooling at room temperature, taking out the solid-liquid mixture, filtering, washing with water and ethanol several times, drying in a constant temperature drying oven at 70°C for 12 hours to obtain light green nickel hydroxide powder. Then it was calcined in a muffle furnace at 400° C. for 2 hours under air condition to finally obtain black nickel oxide powder. From the X-ray diffraction pattern, it can be ...
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