具有橄榄石结构的LiFePO4作为锂离子动力电池的正极材料具有成本低、无毒、原材料来源丰富和良好的高温电化学能力而成为当前研究热点之一.综述了近期国内外锂离子电池正极材料LiFePO4的研究状况,分析和总结了LiFePO4正极材料在结构和性能方面存在的缺陷以及所采取的改进途径,并对该材料的深入研究提出了一些新思路.通过表面包覆、粒子掺杂和制备高密度前驱体等方法的综合应用来合成高密度的LiFePO4复合材料是将来研究的重要方向.
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