Electrochemical performance of Ru-doped LiFePO4/C cathode material for lithium-ion batteries

被引：63
|
作者：
Wang, Yourong [1 ]
Yang, Yifu [1 ]
Hu, Xin [1 ]
Yang, Yanbo [1 ]
Shao, Huixia [1 ]
机构：
[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430073, Hubei, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 481卷 / 1-2期
关键词：
Lithium iron phosphates; Doping; Ruthenium; Lithium-ion battery; Electrochemistry; COMPOSITE CATHODE; ELECTRODE MATERIALS;
D O I：
10.1016/j.jallcom.2009.03.033
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The improvement of the performance of LiFePO4 Cathode material is realized significantly by the method of doping Ru in the precursor material for the first time. The as-prepared LiFe0.99Ru0.01PO4/C electrode material is studied by the measurements of X-ray diffraction (XRD) pattern, scanning electronic microscopy, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The results indicate that the Ru-doped LiFePO4/C materials exhibit discharge specific capacity of 101 mAhg(-1) at 5C current and stable cycle life. These results are elucidated by the slight shrinkage of the lattice of LiFePO4 after Ru doping and the "pillar" effects of Ru3+. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：590 / 594
页数：5
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