高压实磷酸铁锂制备技术探究OA

Lithium iron phosphate cathode material has the advantages of low cost and good thermal sta-bility,but its the energy density is low.To address the issue of low energy density,a systematic experimental study on the compaction density of lithium iron phosphate cathode material was carried out using iron phos-phate,lithium carbonate,glucose,and polyethylene glycol as raw materials.The effects of different sand mill-ing times,spray drying temperatures,and calcination temperatures on the compacted density of lithium iron phosphate were investigated.The experimental results show that the compaction density of lithium iron phos-phate can reach 2.41 g/cm3 when the sand milling time is 5 min;as the sand milling time increases,the compac-tion density shows a decreasing trend.When the sanding time is 1 h and the spray drying temperature is in-creased from 120℃to 200℃,the highest compaction density of 2.25 g/cm3 is achieved at 180℃;further in-creasing the temperature leads to a decrease in compaction density.The effect of spray drying temperature on the compaction density is not significant.