Influence of electrode microstructure on the reactivity of Cu2Sb with lithium

被引：77

作者：

Morcrette, M.

Larcher, D.

Tarascon, J. M.

Edstrom, K.

Vaughey, J. T.

Thackeray, M. M.

机构：

[1] Univ Picardie, CNRS, UMR 6007, Lab React & Chim Solides, F-80039 Amiens, France

[2] Uppsala Univ, Dept Chem Mat, Angstrom Lab, SE-75121 Uppsala, Sweden

[3] Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, Argonne, IL 60439 USA

来源：

ELECTROCHIMICA ACTA | 2007年 / 52卷 / 17期

关键词：

lithium battery electrode; structural evolution; alloys; inter-metallic; solid state electrochemistry;

D O I：

10.1016/j.electacta.2007.01.083

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The reactivity of lithium with Cu2Sb was recently described to be governed by displacement reactions of Cu similar to those occurring in Cu2.33V4O11. In order to complement the earlier work of Fransson et al., we have revisited the electrochemical reactivity of Cu2Sb with Li. Through a different arsenal of characterization techniques, we have emphasized the role of the particle size, electrode preparation and temperature on the reversibility of the electrochemical reaction. We have demonstrated that the structural reversibility of the Cu2Sb electrode can be obtained in two special cases: (1) when the particle size of Cu2Sb is small and when the powders are ball milled with carbon and (2) when Li2CuSb is used as the starting material and some Sb is lost from the electrode during charge. (c) 2007 Published by Elsevier Ltd.

引用

页码：5339 / 5345

页数：7

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