标题：Synthesis of the LiFePO4/C core-shell nanocomposite using a nano-FePO4/polythiophene as an iron source
作者：Liu, Jing ;Yang, Guiling ;Zhang, Xianfa ;Wang, Jiawei ;Wang, Rongshun
作者机构：[Liu, Jing ;Yang, Guiling ;Wang, Jiawei ;Wang, Rongshun ] Institute of Functional Materials, Department of Chemistry, Northeast Normal University, Cha 更多
来源：Journal of Power Sources
摘要：For the first time, a LiFePO4/C core-shell nanocomposite has been synthesized using a nano-FePO4/polythiophene (PTh) as an iron source. With this method, the PTh is in situ polymerized to restrain the growth of FePO4particles, and the typical size of FePO4/PTh particles is in the range of 20-50 nm. The optimized LiFePO4/C nanocomposite is synthesized at 750 °C using 40% citric acid. The prepared LiFePO4particles show a typical size of 50-100 nm and they are fully coated by carbon of 2-4 nm thickness. The LiFePO4/C core-shell nanocomposite gives an improved high electronic conductivity and a good electrochemical behavior at high rates. Thus, this novel method is an effective and facile strategy to improve the rate performance of the LiFePO4cathode. © 2011 Elsevier B.V. All rights reserved.