锂离子电池正极材料LiFePO_4的改性研究进展

Improvement in modification of cathode materials LiFePO4 for lithium ion batteries

橄榄石型结构的磷酸亚铁锂(LiFePO4)作为备受关注的锂离子电池正极材料,可望成为新一代首选的可代替钴酸锂的锂离子二次电池正极材料。详细地叙述了近年来国内外对LiFePO4改性所做的研究,着重介绍了导电剂掺杂包覆、金属离子掺杂和合成方法对LiFePO4电化学性能的影响,以及这些改性方法存在的问题。

As a new concerned cathode materials,olivine lithium iron phosphate is firstly expected to replace the lithium cobaltate（LiCoO2）for lithium ion battery.In this paper,the progress in modified research of electrochemical properties of LiFePO4 at home and abroad in recent years was introduced.Especially the effects of adding the conductive materials,metal ion doping,methods of synthesis on electrochemical properties of LiFePO4,and the present problem were discussed.