Sodium Hydroxide → Nickel-cobalt-manganese hydroxide

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.

1. additionwas slowly added
2. customwas controlled at 50° C
3. stirringAfter stirring for 8 hours
4. filtrationthe precipitate was filtered
5. customdried at 120° C. for 10 hours

ORD 기록

ord-ecc37b24c3054d0b96ec5b0c3584ffa7

출처 데이터셋

uspto-grants-2011_02

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US07887721B2