Preparation method of spherical nickel hydroxid
A technology of spherical nickel hydroxide and hydroxide, applied in the direction of nickel oxide/nickel hydroxide, etc., can solve problems such as uneven particle size distribution of products, affecting the quality consistency of nickel batteries, and difficult control of process conditions, so as to achieve product consistency Good performance, overcome consistency defects, uniform particle size distribution
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Embodiment 1
[0009] Add the three reaction materials nickel sulfate, ammonia water and sodium hydroxide into the reaction vessel, the concentration of nickel ion is 2mol / l, the concentration of ammonia water is 8mol / L, and the concentration of sodium hydroxide is 7mol / L. The above three reaction materials are added at the same time and the flow ratio It is nickel sulfate: sodium hydroxide: ammonia water is 1: 0.8-0.9: 0.1, and the nucleation time is controlled to be 25 minutes. After that, the flow ratio of the three materials is adjusted to be 1: 0.5-0.6: 0.1, and the temperature is controlled at 50 -60°C, PH value 13, entering the growth stage, feed-reaction-collection is a continuous overall process, and this process is maintained for 24 hours, which is a cycle. Afterwards, the semi-finished products collected in one cycle are aged, washed, dehydrated, and dried to obtain spherical nickel hydroxide products, thus completing the preparation of one batch of products.
Embodiment 2
[0011] Add the mixed solution of the three reaction materials nickel sulfate and cobalt sulfate, ammonia water and sodium hydroxide into the reaction vessel, the concentration of nickel ion is 1.7mol / l, the concentration of ammonia water is 7mol / L, and the concentration of sodium hydroxide is 6mol / L. The reaction materials are added at the same time and the flow ratio is nickel sulfate: sodium hydroxide: ammonia water is 1: 0.5-0.6: 0.1, and the nucleation time is controlled to be 20 minutes. After that, the flow ratio of the three materials is maintained and the temperature is controlled at 50-60 ℃, PH value is 12, enters the growth stage, feeding-reaction-collection is a continuous overall process, and this process is maintained for 22 hours, which is a cycle. Afterwards, the semi-finished products collected in one cycle are aged, washed, dehydrated, and dried to obtain spherical nickel hydroxide products, thus completing the preparation of one batch of products.
Embodiment 3
[0013] Add the mixed solution of three reaction materials nickel chloride and zinc chloride, ammonia water and potassium hydroxide into the reaction vessel, the concentration of nickel ion is 2.2mol / l, the concentration of ammonia water is 10mol / L, and the concentration of sodium hydroxide is 8mol / L. The three reaction materials are added at the same time and the flow ratio is nickel sulfate: sodium hydroxide: ammonia water is 1: 0.8-0.9: 0.1, and the nucleation time is controlled to be 30 minutes. After that, the flow ratio of the three materials is adjusted to be 1: 0.5-0.6 : 0.1, and the temperature is controlled at 50-60°C, the pH value is 13.5, and enters the growth stage. The addition-reaction-collection is a continuous overall process, and this process is maintained for 24 hours, which is a cycle. Afterwards, the semi-finished products collected in one cycle are aged, washed, dehydrated, and dried to obtain spherical nickel hydroxide products, thus completing the prepara...
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