正极材料LiFePO_4充放电原理及改性研究  

Modification Progress of LiFePO_4 as Cathode Materials for Lithium Ion Batteries and Its Charge-Discharge Principles

作　　者：崔学军[1] 李国军[2] 卢俊峰[1] 王修春[1] 任瑞铭[2] 

机构地区：[1]山东省科学院新材料研究所,济南250014 [2]大连交通大学辽宁省新能源电池重点实验室,大连116028

出　　处：《材料导报》2010年第11期53-57,共5页Materials Reports

摘　　要：综述了正极材料LiFePO4的充放电原理,针对其堆积密度低和电导率差的问题,分别从包覆、掺杂、磷铁相导电网络和微观结构与形态4种改性途径出发,通过详细地分析和比较,得出以制备具有纳米孔的微米级粒子为最终目标的合成路线。最后,简要分析和展望了LiFePO4的产业化现状及合成路径。The charge-discharge principles of LiFePO4 as cathode material for lithium ion batteries are briefly reviewed. In accordance with the low bulk density and poor electrical conductivity, a route to prepare micro-particles with nano-porous is proposed through detailed analysis comparison of the modification methods, including coatings, doping, Fe2P phase conductivity network, controlling microstructure and morphology. In addition, the industrialization situation and synthesis routes of LiFePO4 as cathode material are briefly analyzed and the prospects are discussed.

关 键 词：锂离子电池 正极材料 磷酸铁锂 电导率 

分 类 号：TM912[电气工程—电力电子与电力传动]