A kind of ultra-large particle size nickel-cobalt-manganese hydroxide for energy storage and preparation method thereof
A technology of hydroxide and nickel-cobalt-manganese, applied in the direction of manganese oxide/manganese hydroxide, cobalt oxide/cobalt hydroxide, nickel oxide/nickel hydroxide, etc. It can improve the tap density, avoid particle cracking and improve the compactness.
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Embodiment 1
[0035] 1. Select nickel sulfate, cobalt sulfate and manganese sulfate, and prepare a mixed metal salt solution with a total metal ion concentration of 2.5mol / L according to the molar ratio of Ni:Co:Mn of 0.55:0.20:0.25; the prepared concentration is 8.0mol / L The sodium hydroxide solution is used as a precipitating agent; the ammonia solution with a concentration of 8.0mol / L is prepared as a complexing agent.
[0036] 2. Feed nitrogen into the 5000L sealed reaction kettle with stirring and temperature control device, the flow rate is 1200L / h, add 2000L bottom liquid; the added bottom liquid is ammonia concentration of 3g / L, pH value of 12.2, temperature of 60°C aqueous solution. Start stirring, continue and feed nitrogen into the reactor for atmosphere protection, and maintain nitrogen protection during the entire reaction process, with a flow rate of 1200 L / h.
[0037]3. Add the mixed metal salt solution, sodium hydroxide solution and ammonia solution prepared in step 1 into ...
Embodiment 2
[0046] 1. Select nickel sulfate, cobalt sulfate and manganese sulfate, and prepare a mixed metal salt solution with a total metal ion concentration of 2.0mol / L according to the molar ratio of Ni:Co:Mn of 0.52:0.20:0.28; the prepared concentration is 6.0mol / L The sodium hydroxide solution is used as a precipitating agent; the ammonia solution with a concentration of 7mol / L is prepared as a complexing agent.
[0047] 2. Feed nitrogen into the 5000L sealed reaction kettle with stirring and temperature control device, the flow rate is 1800L / h, add 4000L bottom liquid; the added bottom liquid is ammonia concentration of 3g / L, pH value of 12.0, temperature of Aqueous solution at 57°C. Start stirring, continue and feed nitrogen into the reactor for atmosphere protection, and maintain nitrogen protection during the entire reaction process, with a flow rate of 1800 L / h.
[0048] 3. Add the mixed metal salt solution, sodium hydroxide solution and ammonia solution prepared in step 1 int...
Embodiment 3
[0057] 1. Select nickel sulfate, cobalt sulfate and manganese sulfate, and prepare a mixed metal salt solution with a total metal ion concentration of 2.0mol / L according to the molar ratio of Ni:Co:Mn of 0.50:0.20:0.30; the prepared concentration is 5.0mol / L The sodium hydroxide solution is used as a precipitating agent; the ammonia solution with a concentration of 5.5mol / L is prepared as a complexing agent.
[0058] 2. Feed nitrogen into the 5000L sealed reaction kettle with stirring and temperature control device, the flow rate is 2200L / h, add 3000L bottom liquid; the added bottom liquid is ammonia concentration of 4g / L, pH value of 12.2, temperature of Aqueous solution at 55°C. Start stirring, continue to feed nitrogen into the reactor for atmosphere protection, and maintain nitrogen protection during the entire reaction process, with a flow rate of 2200 L / h.
[0059] 3. Add the mixed metal salt solution, sodium hydroxide solution and ammonia solution prepared in step 1 in...
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