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题名: Synthesis and electrochemical properties of LiFeP<inf>1-x</inf>B <inf>x</inf>O<inf>4-&delta;</inf>/C cathode materials
作者: Lu, Zhang (1) ; Xueya, Kang (1) ; Wumair, Tuerdi (1) ; Junqing, Dou (1) ; Ying, Han (1)
通讯作者: Xueya, K.(xueyakang@yahoo.cn)
关键词: Lithium-ion battery ; Cathode material ; Lithium iron phosphate ; B-Doping
刊名: Journal of Power Sources
发表日期: 2013
卷: 243, 页:147-151
收录类别: SCI ; EI
部门归属: (1) Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China ; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China ; (3) Xinjiang Key Laboratory of Electronic Information Materials and Devices, Urumqi 830011, China
摘要: The composite materials of B-doped LiFeP1-xBxO 4-δ/C (x = 0.00, 0.05, 0.10 and 0.15) at P-site are synthesized in flowing N2 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 LiFeP0.9B0.1O4-δ/C composite exhibits the best electrochemical performance in the all samples. The discharge capacities of LiFeP0.9B0.1O4-δ/C are 155.2 mAh g-1, 146.2 mAh g-1, 139.4 mAh g-1, 132.4 mAh g-1, 119.1 mAh g-1 and 102.6 mAh g-1 at the rate of 0.2C, 0.5C, 1.0C, 2.0C, 5.0C, and 10.0C. © 2013 Elsevier B.V. All rights reserved.
英文摘要: The composite materials of B-doped LiFeP1-xBxO 4-δ/C (x = 0.00, 0.05, 0.10 and 0.15) at P-site are synthesized in flowing N2 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 LiFeP0.9B0.1O4-δ/C composite exhibits the best electrochemical performance in the all samples. The discharge capacities of LiFeP0.9B0.1O4-δ/C are 155.2 mAh g-1, 146.2 mAh g-1, 139.4 mAh g-1, 132.4 mAh g-1, 119.1 mAh g-1 and 102.6 mAh g-1 at the rate of 0.2C, 0.5C, 1.0C, 2.0C, 5.0C, and 10.0C. © 2013 Elsevier B.V. All rights reserved.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/3854
Appears in Collections:中国科学院新疆理化技术研究所(2002年以前数据)_期刊论文

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Recommended Citation:
Lu, Zhang (1); Xueya, Kang (1); Wumair, Tuerdi (1); Junqing, Dou (1); Ying, Han (1).Synthesis and electrochemical properties of LiFeP1-xB xO4-δ/C cathode materials,Journal of Power Sources,2013,243():147-151
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