Observation of Valence State Change in Layered Li1-yNi1/3Mn1/3Co1/3O2
Journal Article
·
· AIP Conference Proceedings
- Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka, 563-8577 (Japan)
- Unit of Chemistry, Faculty of Engineering, Kansai University, Suita, Osaka, 564-8680 (Japan)
- Institute of Scientific and Industrial Research (ISIR), Osaka University, Ibaraki, Osaka, 567-0047 (Japan)
- SR Center, Ritsumeikan University, Kusatsu, Shiga, 525-8577 (Japan)
Valence state changes in Li1-yNi1/3Mn1/3Co1/3O2 were investigated using hard and soft X-ray absorption fine structure (XAFS) measurements. Reversible changes in the M-O bond lengths and in the position of the M L-edge peak (M Ni, Co) were observed during the first charge and discharge cycle. These results demonstrate that Li de-intercalation/intercalation proceeds mainly by changes in the valence states of the Ni and Co cations. In addition, it has been shown that the host material LiNi1/3Mn1/3Co1/3O2 had a surface structure free of Li2CO3.
- OSTI ID:
- 21054660
- Journal Information:
- AIP Conference Proceedings, Vol. 882, Issue 1; Conference: XAFS13: 13. international conference on X-ray absorption fine structure, Stanford, CA (United States), 9-14 Jul 2006; Other Information: DOI: 10.1063/1.2644564; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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