Method for producing nanoscale cobalt (II) oxide
A cobalt oxide, nano-scale technology, applied in the field of metal powder production, can solve the problems of short service life of secondary batteries, long charging time of secondary batteries, uneven particle size, etc., so as to achieve short charging time and prolong service life. , the effect of narrow particle size distribution
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Embodiment 1
[0024] Prepare the following ingredients first:
[0025] Cobalt nitrate crystals, 150L of ammonia water with a concentration of 180g / L, 1800L of sodium hydroxide with a concentration of 130g / L and 10% dilute ammonia water;
[0026] Then, add deionized water with a temperature of 30° C. into the liquid tank, and slowly add cobalt nitrate crystals while stirring, and dissolve the cobalt nitrate crystals. When the concentration of cobalt reaches 100g / L, adding concentration is 10% dilute ammonia water and adjusts its pH value to 4.2, obtains cobalt nitrate solution;
[0027] After that, take 1000L of the above-mentioned cobalt nitrate solution and add it into the reaction kettle, and heat it to 33°C. While stirring evenly, slowly add 150L of the above-mentioned ammonia water with a concentration of 180g / L into 1000L of the above-mentioned nitric acid within 2.2 hours by spraying. In the cobalt solution, the first mixed solution is obtained;
[0028] Afterwards, the 1800L sodium...
Embodiment 2
[0038] Prepare the following ingredients first:
[0039] Cobalt nitrate crystals, 150L of ammonia water with a concentration of 180g / L, 1800L of sodium hydroxide with a concentration of 130g / L and 10% dilute ammonia water;
[0040] Then, add deionized water with a temperature of 35° C. into the liquid tank, and slowly add cobalt nitrate crystals while stirring, and dissolve the cobalt nitrate crystals. When the concentration of cobalt reaches 100g / L, adding concentration is 10% dilute ammonia water and adjusts its pH value to 4.5, obtains cobalt nitrate solution;
[0041] After that, take 1000L of the above-mentioned cobalt nitrate solution and add it into the reaction kettle, and heat it to 35°C. While stirring evenly, slowly add 150L of the above-mentioned ammonia water with a concentration of 180g / L into 1000L of the above-mentioned nitric acid within 2.5 hours by spraying method. In the cobalt solution, the first mixed solution is obtained;
[0042] Afterwards, the 1800L...
Embodiment 3
[0052] Prepare the following ingredients first:
[0053] Cobalt nitrate crystals, 150L of ammonia water with a concentration of 180g / L, 1800L of sodium hydroxide with a concentration of 130g / L and 10% dilute ammonia water;
[0054] Then, add deionized water at a temperature of 25° C. into the liquid tank, and slowly add cobalt nitrate crystals while stirring, and dissolve the cobalt nitrate crystals. When the concentration of cobalt reaches 100g / L, adding concentration is 10% dilute ammonia water and adjusts its pH value to 4, obtains cobalt nitrate solution;
[0055] After that, take 1000L of the above-mentioned cobalt nitrate solution and add it into the reaction kettle, and heat it to 30°C. While stirring evenly, slowly add 150L of the above-mentioned ammonia water with a concentration of 180g / L into 1000L of the above-mentioned nitric acid within 2 hours by spraying method. In the cobalt solution, the first mixed solution is obtained;
[0056] Afterwards, the 1800L sodiu...
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