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Structural transformations in lithiated Mn2Sb electrodes probed by Mossbauer spectroscopy and X-ray diffraction
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
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2006 (English)In: Hyperfine Interactions, ISSN 0304-3843, E-ISSN 1572-9540, Vol. 167, no 1-3, 759-765 p.Article in journal (Refereed) Published
Abstract [en]

The electrochemical reactions of Li with Mn2Sb and small amounts of MnSb have been investigated by Mossbauer spectroscopy and X-ray diffraction. The lithiation transforms initially the MnSb part and later the Mn2Sb part into amorphous LiMnSb. On further lithiation the LiMnSb phase transforms to rather well crystallized Li3Sb. In the X-ray diffraction pattern for the fully lithiated sample extruded nanocrystalline Mn is seen for the first time in these type of electrodes. The first delithiation of Li3Sb results in a mixture of three phases Mn2Sb, MnSb and LiMnSb. After several cycles (charges and discharges) of the electrode the Mn2Sb phase disappears completely.

Place, publisher, year, edition, pages
2006. Vol. 167, no 1-3, 759-765 p.
Keyword [en]
Mossbauer spectroscopy, X-ray diffraction, nanocrystalline material
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-146658DOI: 10.1007/s10751-006-9353-yISI: 000243094900009OAI: oai:DiVA.org:uu-146658DiVA: diva2:398682
Available from: 2011-02-18 Created: 2011-02-18 Last updated: 2011-02-18Bibliographically approved

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