Journal
SCRIPTA MATERIALIA
Volume 69, Issue 1, Pages 92-95Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2013.02.040
Keywords
SiO; Li-ion batteries; Atom probe tomography; Microstructure
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Funding
- International Center for Young Scientists (ICYS), NIMS
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Atom probe tomography and high resolution transmission electron microscopy have shown the presence of nano-sized amorphous Si clusters in non-disproportionated amorphous SiO powders are under consideration for anode materials in Li-ion batteries. After Li insertion/extraction, no change was found in the chemistry and structure of the Si clusters. However, Li atoms were found to be trapped at the amorphous SiO phase after Li insertion/extraction, which may be attributed to the large capacity fade after the first charge/discharge cycle. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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