锂电池正极材料磷酸铁锂的研究现状与展望

橄榄石型的LiFePO4是新开发成功的一类锂离子电池用正极材料,它具有价格低廉,热稳定性好,对环境无污染的特点,使其成为最具潜力的正极材料之一。介绍了LiFePO4的结构及合成方法。评述了近年来国内外对于改善磷酸亚铁锂的电化学性能所进行的研究,重点介绍了添加导电材料、提高离子扩散效率等方法对锂离子电池正极材料磷酸亚铁锂的影响,对该材料的应用前景进行了展望,并提出了下一步可能的研究趋势。

Research progress and prospects of lithium iron phosphate as lithium-ion battery cathode material

As a new type positive electrode material for lithium ion battery,olivine lithium iron phosphate has advan-tages of low cost,good thermal stability and environment friendly.The crystal structure and the preparation of LiFe-PO4 were introduced.The progresses in modified research of electrochemical properties of LiFePO4 at home and abroad in recent years were reviewed.Especially the effects of adding the conductive materials and improving the ef-ficiency of diffusing ions on the LiFePO4 were introduced,and th...