The lithium iron phosphate coating carbon process involves ball milling, filtration, grinding and characterization of lithium-ion battery cathode materials.
1. A method for preparing carbon-coated lithium iron phosphate material, which is characterized in that the method includes: adding lithium carbonate, ferrous oxalate, ammonium dihydrogen phosphate dihydrate and sucrose into a ball mill tank, and then Add absolute ethanol, seal it and put it into a ball mill for ball milling to obtain slurry a.
2. Filter slurry a, and then dry the filtered slurry to obtain block product b.
3. Grind the massive product b to obtain white powder c.
4. Transfer the white powder c to the first crucible, exhaust the air, seal the mouth of the crucible with aluminum foil, invert the second crucible, and fill the second crucible with reducing powder.
5. Place the first crucible and the second crucible as a whole in a horse boiling furnace, heat for a period of time, and obtain the carbon-coated lithium iron phosphate material in the first crucible.
6. A carbon-coated lithium iron phosphate material, characterized in that the raw materials by weight include: the purity of each raw material is greater than 99%.