A preparation method of lithium nickel manganese oxide material and lithium ion battery prepared by the material
A lithium-ion battery, lithium-nickel-manganese-oxygen technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of poor mixing effect and uneven crystal composition, achieve good heat exchange, shorten sintering time, Good electrochemical performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0034]Take lithium carbonate 23.274g, nickel nitrate 87.24g, manganese dioxide 78.246g by Li, Ni, Mn molar ratio 2.1: 1: 3, add the polymer templating agent polyethylene (molecular weight is 20000) 28.314 of mixture total weight 15wt% g, the particle size range is 100-400nm. Then add an appropriate amount of absolute ethanol, the ratio of absolute ethanol is 0.5ml / g, a total of 94ml is added, the mixture is adjusted to a paste, ball milled for 8 hours, the mixture is fully mixed, and the particle size range after ball milling is 0.5-20μm. Then put the ball-milled paste in an air-dried oven at 80°C for 12 hours to remove absolute ethanol. After the dried mixture is ball milled for 2 hours, the particle size of the powder is 0.5-20μm. In the air atmosphere, heat up to 900℃ at a constant temperature for 1h at a rate of 5℃ / min; The cooling rate was reduced to 600°C for 24 hours, and finally cooled to room temperature with the furnace to prepare the high-voltage cathode material L...
Embodiment 2
[0047] Weigh lithium oxide 6.12g, nickel hydroxide 18.538g, manganese carbonate 68.97g according to Li, Ni, Mn molar ratio 2.04: 1: 3, add the polymer templating agent polyacrylonitrile (molecular weight is 10000) of mixture total weight 30wt% 28.1g, the particle size range is 50-300nm. Then add an appropriate amount of anhydrous 1,2-propanediol, the addition ratio of anhydrous 1,2-propanediol is 0.2ml / g, a total of 18.7ml, adjust the mixture to a paste, ball mill for 10 hours, make the mixture fully mixed evenly, after ball milling The particle size range is 0.5-15 μm. Then put the ball-milled paste in a blast drying oven at 120°C for 8 hours to remove anhydrous 1,2-propanediol. After ball milling the dried mixture for 4 hours, the particle size of the powder is in the range of 0.5-20 μm. In an oxygen-enriched atmosphere (80% oxygen concentration), heat up to 850° C. at a constant temperature for 8 hours at a rate of 10° C. / min; Then directly reduce the temperature to 600°C...
Embodiment 3
[0051] Weigh lithium hydroxide 51.84g, nickelous oxide 74.69g, manganese hydroxide 215.814g by Li, Ni, Mn molar ratio 2.16: 1: 3, add the polymer templating agent polyethylene glycol (molecular weight) of mixture total weight 5wt%. It is 5000) 17g, and the particle size range is 200-600nm. Then add an appropriate amount of anhydrous isobutanol, the ratio of anhydrous isobutanol is 1ml / g, a total of 342ml is added, the mixture is adjusted to a paste, ball milled for 6 hours, the mixture is fully mixed, and the particle size range after ball milling is 2- 20 μm. Then put the ball-milled paste in a blast drying oven at 100°C for 10 hours to remove anhydrous isobutanol. After ball milling the dried mixture for 6 hours, the particle size range after ball milling is 2-20μm. In the air atmosphere, heat up to 800℃ for 12 hours at a rate of 0.1℃ / min; The cooling rate was reduced to 700 ° C for 48 hours, and finally cooled to room temperature with the furnace, and the high-voltage cat...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Particle size | aaaaa | aaaaa |
| Particle size | aaaaa | aaaaa |
| Aperture | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More