In situ <sup>119sup>Sn M枚ssbauer spectroscopy used to study lithium insertion in c-Mg<sub>2sub>Sn
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- 作者：L. Aldon ; C. M. Ionica ; P. E. Lippens ; D. Larcher ; J.-M. Tarascon ; J. Olivier-Fourcade and J.-C. Jumas
- 关键词：in situ measurements ; lithium ; ion batteries ; electrochemical behavior ; M枚ssbauer spectroscopy of 119Sn
- 刊名：Hyperfine Interactions
- 出版时间：January, 2006
- 出版年：2006
- 期刊代码：18_03043843
- 类别：cp
- 卷：167
- 期：1-3
- 页码：729-732
- 数据来源：sp
摘要
The electrochemical reactions of Li with c-Mg<sub>2sub>Sn have been investigated by in situ M枚ssbauer spectroscopy of 119Sn and X-ray diffraction. The lithiation transforms initially c-Mg<sub>2sub>Sn part into Li<sub> x sub>Mg<sub>2sub>Sn alloy (x < 0.5). On further lithiation Mg is extruded from the structure with formation of Li<sub>2sub>MgSn ternary alloy. In situ M枚ssbauer spectroscopy provides valuable information on local environment of tin and swelling behavior and cracking of the particles during discharge and charge processes.