Title: Preparation Conditions of Amorphous Ni(OH)_2 Electrode Material
Abstract: Amorphous nickel hydroxide powder was prepared by the method of micro-emulsion deepfreezing deposition.By orthogonal tests of experimental conditions,the effects of pH,reaction temperature and time on the electrochemical activity of the amorphous Ni(OH)2 were examined.It was found that the main influential factor was pH value of solution,secondly reaction temperature and time.Amorphous nickel hydroxide powder was prepared in a TX-100/butanol/cyclohexane/water system under the optimal conditions of the volume ratio of TX-100 to butanol 1:15,mass ratio of water to surfactant 15.1 or so,pH of 12,reaction time 2 h at 50~60℃,the precipitate was then rapidly frozen at 0~5℃.Discharge specific capacity of the amorphous nickel hydroxide powder as electrode active material could reach as high as 333.22 mA-h/g.In addition,the mechanism of the method of micro-emulsion deepfreezing deposition was also discussed.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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