动力锂离子电池正极材料LiFePO_4的研究进展  

Research Progress on LiFePO_4 as Power Lithium Ion Battery Cathode Materials

作　　者：刘树信[1,2] 殷恒波[1] 王海滨[2] 

机构地区：[1]江苏大学化学化工学院,镇江212013 [2]绵阳师范学院化学与化学工程学院,绵阳621000

出　　处：《材料导报》2012年第17期150-153,共4页Materials Reports

基　　金：四川省科技厅基础应用研究项目(2011JY0101)

摘　　要：LiFePO4因具有价格低廉、性能稳定、安全和无毒等优点而备受关注。但LiFePO4电子电导率低、锂离子扩散系数小、低温性能差及振实密度低等缺点限制了其大规模应用。综述了近几年国内外在解决上述问题中的研究进展,包括导电剂包覆与掺杂、控制颗粒形状与粒度、颗粒纳米化、原子掺杂等方法,并展望了LiFePO4正极材料的研究方向和应用前景。LiFePO4 is attracted enormous research interest for its lower cost, high stability, safety and non-toxicity. The extensive use of LiFePO4 is limited by poor electronic conductivity, low Li-ion diffusion coefficient, poor low temperature electrochemical performance and low tap density of LiFePO4. The development on solving these prob- lems above recent years is summered, including coated and doped by conductive agent, particle shape and size control, particle nanocrystallization, atom doping and oxide modified or coated LiFePO4, and so on. Finally, the prospect ofLiFePO4 studies and applications are presented.

关 键 词：锂离子电池 磷酸铁锂 电子导电率 锂离子扩散系数 振实密度 

分 类 号：TM911[电气工程—电力电子与电力传动] TB383[一般工业技术—材料科学与工程]