Electrochemical impedance characterization of FeSn2 electrodes for Li-ion batteries

被引:22
作者
Chamas, M. [2 ]
Lippens, P-E. [2 ]
Jumas, J-C. [2 ]
Hassoun, J. [1 ]
Panero, S. [1 ]
Scrosati, B. [1 ]
机构
[1] Univ Roma La Sapienza, Dipartimento Chim, I-00185 Rome, Italy
[2] Univ Montpellier 2, Inst Charles Gerhardt, Equipe Agregats Interfaces & Mat Energie, UMR CNRS 5253, F-34095 Montpellier 5, France
关键词
FeSn2; Lithium alloying; Anode; Electrochemical impedance spectroscopy; TIN ELECTRODES; LITHIUM; INTERFACE;
D O I
10.1016/j.electacta.2011.05.069
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
This work reports the electrochemical characterization of a micro-scale FeSn2 electrode in a lithium battery. The electrode is proposed as anode material for advanced lithium ion batteries due to its characteristics of high capacity (500 mAh g(-1)) and low working voltage (0.6V vs. Li). The electrochemical alloying process is studied by cyclic voltammetry and galvanostatic cycling while the interfacial properties are investigated by electrochemical impedance spectroscopy. The impedance measurements in combination with the galvanostatic cycling tests reveal relatively low overall impedance values and good electrochemical performance for the electrode, both in terms of delivered capacity and cycling stability, even at the higher C-rate regimes. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:6732 / 6736
页数:5
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