Journal
E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY
Volume 9, Issue -, Pages 416-421Publisher
SURFACE SCI SOC JAPAN
DOI: 10.1380/ejssnt.2011.416
Keywords
XAFS; X-ray absorption spectroscopy; Photo electron spectroscopy; Lithium ion battery; Ultra soft X-ray; Lithium
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Funding
- Research and Development Initiative for Scientific Innovation of New Generation Batteries (RISING) project from New Energy and Industrial Technology Development Organization (NEDO) in Japan
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For analysis of lithium ion batteries, the soft X-ray grating monochromator beamline BL-2 at SR center of Ritsumeikan University has been upgraded: adding a new grating (900 l/mm) to extend the available energy up to 1000 eV, and constructing a XAFS (X-ray Absorption Fine Structure)-PES (photoelectron spectroscopy) chamber equipped with in-situ transfer vessel systems. With this beamline, Li K-, O K- and 3d transition metal (TM) L- XAFS and Li 1 s PES spectra were measured for several compounds related to Li ion batteries. For precise analysis of the Li chemical state, some of Li compounds, as well as Li metal were prepared by vacuum deposition.
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