爆轰法合成纳米磷酸铁锂的性能研究

由于磷酸铁锂正极材料具有特殊的空间架构以及优越的安全性能、环保性能和其他锂离子电池正极材料无法超越的循环性能,使得其在储能电池和动力电池产业中快速发展。通过配制爆炸合成专用炸药制备了纳米级磷酸铁锂颗粒粉体,分析粉体材料检测结果发现:合成的纳米磷酸铁锂粉体材料的热稳定性比较高,在高温条件下粉体样品的质量维持在一个不变的数值范围内;另外根据扫描得到的伏安曲线发现粉体材料的循环重现性较好,并且材料的脱锂性能与嵌锂性能也具有很好的可逆性。

STUDY ON PROPERTIES OF NANOMETER LITHIUM IRON PHOSPHATE SYNTHESIZED BY EXPLOSIVE DETONATION

Lithium iron phosphate develops rapidly in the energy storage battery and power battery industry due to its cathode material have special spatial structure,superior safety performance,environmental protection performance and the best cycle performance in the lithium ion battery anode material.The nanometer particle powder of LFP was synthesized by explosive detonation through the preparation of special explosive.Testing analyses of power materials results showed that thermal stability of the nanometer LFP powder was relatively high,and the quality of powder sample maintained at a constant value range under the high temperature condition.In addition,the loop reproducibility was better according to the volt ampere curves and the material had good reversibility of lithium-removed and lithium-stored performance.