Journal of Power Sources, Dec 1, 2013, Vol.243, p.147(5)
To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jpowsour.2013.05.093 Byline: Zhang Lu, Kang Xueya, Tuerdi Wumair, Dou Junqing, Han Ying Abstract: The composite materials of B-doped LiFeP.sub.1-x B.sub.x O.sub.4-[delta] /C (x = 0.00, 0.05, 0.10 and 0.15) at P-site are synthesized in flowing N.sub.2 atmosphere by liquid phase reduction method with heat treatment. The synthesized products are characterized by X-ray diffraction, SEM, cyclic voltammetry and galvanostatic charge/discharge tests. The results show that the samples all have well-regulated olivine-type structures, high crystallinity, moderate and uniform particle size, while B-doping improves the conductivity of composite materials, decreases the polarization of electrode, and enhances the cycling performance and high rate capability effectively. The LiFeP.sub.0.9B.sub.0.1O.sub.4-[delta] /C composite exhibits the best electrochemical performance in the all samples. The discharge capacities of LiFeP.sub.0.9B.sub.0.1O.sub.4-[delta] /C are 155.2 mAh g.sup.-1, 146.2 mAh g.sup.-1, 139.4 mAh g.sup.-1, 132.4 mAh g.sup.-1, 119.1 mAh g.sup.-1 and 102.6 mAh g.sup.-1 at the rate of 0.2C, 0.5C, 1.0C, 2.0C, 5.0C, and 10.0C. Author Affiliation: (a) Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China (b) Graduate University of Chinese Academy of Sciences, Beijing 100049, China (c) Xinjiang Key Laboratory of Electronic Information Materials and Devices, Urumqi 830011, China Article History: Received 25 December 2012; Revised 20 May 2013; Accepted 20 May 2013
Electrochemistry -- Chemical Properties ; Electrochemistry -- Analysis ; Electrochemistry -- Electric Properties
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