摘要
橄榄石型LiFePO4正极材料具有环境污染小,安全性能好,价格低廉,循环寿命长,工作电压稳定等突出优点,是极具开发和应用潜力的新一代锂离子电池正极材料,尤其是在对材料要求较高的动力电源领域的应用,受到各界的广泛关注。但是其本身的低电子电导率和离子扩散系数,导致材料大倍率性能差,限制了它的大规模应用。因此,对橄榄石结构LiFePO4正极材料的改性成为研究的热点。从三个方面介绍了LiFePO4正极材料的最新研究成果,并对其今后的发展进行展望。
The olivine-type LiFePO4 cathode material has become a new generation of cathode material which is considered as the extremely potential of development and application for using in lithium ion batteries because of its less pollution to the environment, good safety performance and low price, long cycle life and stable operating voltage. So it has been widely concerned, especially in the application of the power batteries that demand higher for the material. But its own low electronic conductivity and ion diffusion coefficient lead to poor large rate performance of the material, which limits its large-scale application. Hence, research on the modification of olivine-type LiFePO4 cathode materials is still a hot spot. In this paper, the latest research results of LiFePO4 cathode materials were introduced from three aspects, and its future development trend was also discussed.
出处
《当代化工》
CAS
2013年第4期466-469,共4页
Contemporary Chemical Industry
基金
辽宁省教育厅科技攻关项目(L2011057)
关键词
锂离子电池
橄榄石型
离子掺杂
包覆
正极材料
Lithium ion battery
Olivine-type
Ion substitution
Surface coating treatment
Cathode material
