Reaction equation
[N+]([O-])([O-])=[O:2].[Ni+2:5].[N+]([O-])([O-])=[O:7].[N+]([O-])([O-])=[O:11].[Mn+2:14].[N+]([O-])([O-])=[O:16].[N+]([O-])([O-])=[O:20].[Co+2:23].[N+]([O-])([O-])=[O:25].[OH-].[Na+]>O>[OH-:2].[Co+2:23].[Mn+2:14].[Ni+2:5].[OH-:7].[OH-:11].[OH-:16].[OH-:20].[OH-:25]Participants
Reactant 4
Product 1
Reagents, catalysts & solvents 1
Procedure
1 mol nickel nitrate, 1 mole manganese nitrate, and 1 mol cobalt nitrate were dissolved in 750 ml deionized water to prepare 4 mol/L solution, and 1500 ml NaOH aqueous solution of 4 mol/L was slowly added under stirring. The temperature of the solution was controlled at 50° C. After stirring for 8 hours, the precipitate was filtered and dried at 120° C. for 10 hours to yield nickel-manganese-cobalt hydroxide Ni1/3Mn1/3Co1/3(OH)2. 1.05 mols LiNO3 was dissolved in 220 ml deionized water, and after LiNO3 was completely dissolved, 1 mol Ni1/3Mn1/3Co1/3(OH)2 precursor was added. After slowly removing water by evaporation at 65° C. under stirring, in a muffle furnace the first-stage sintering was carried at 650° C. in oxygen atmosphere for 4 hours. The obtained product of the first-stage sintering was pulverized and then 200 g polytetrafluoroethylene aqueous solution containing 9 g polytetrafluoroethylene was added. After uniformly mixing, in the muffle furnace the second-stage sintering was carried out at 800° C. in oxygen atmosphere for 15 hours. After sintering, the material was cooled along with the furnace, and then pulverized by ball milling and passed through a 300 mesh screen to yield the final product LiNi1/3Mn1/3Co1/3O2.
Workup
- additionwas slowly added
- customwas controlled at 50° C
- stirringAfter stirring for 8 hours
- filtrationthe precipitate was filtered
- customdried at 120° C. for 10 hours
Sources & evidence
- ORD record
- ord-ecc37b24c3054d0b96ec5b0c3584ffa7
- Source dataset
- uspto-grants-2011_02
- Patent number
- US07887721B2
Linked notes
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