通过FePO4的低温还原插锂合成了结晶良好、粒径分布均匀的正极材料LiFePO4纳米粉体.采用XRD、SEM对所得材料的物相结构和表面形貌进行了分析,并系统研究了烧结条件对材料物理和电化学性能的影响.结果表明,提高烧结温度和延长烧结时间都有利于提高产物的结晶度,但会使产物的颗粒长大.600℃下烧结2h所得的LiFePO4表现的电化学性能最佳,首次放电容量可达159mAh·g-1,50次充放电循环后容量几乎无衰减.
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