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Li insertion into V6O13 battery cathodes studies by soft x-ray spectroscopies
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics II. Chemistry, Department of Materials Chemistry, Structural Chemistry. (Fysik 2)
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics II. Chemistry, Department of Materials Chemistry, Structural Chemistry. (Fysik 2)
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics II. Chemistry, Department of Materials Chemistry, Structural Chemistry. (Fysik 2)
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics. Department of Physics and Materials Science, Physics II. Chemistry, Department of Materials Chemistry, Structural Chemistry. (Fysik 2)
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2004 (English)In: Journal of Applied Physics, Vol. 95, no 11, 6444-6449 p.Article in journal (Refereed) Published
Abstract [en]

Changes in the electronic structure of V6O13 on lithium-ion insertion into battery cathod were studied by soft x-ray absorption (SXA) spectroscopy and resonant soft x-ray emission (SXE) spectroscopy. SXA and resonant SXE spectra were recorded ex situ for cycled battery cathodes discharged to different potentials corresponding closely to distinct lithiated stages (LixV6O13,x=0,1,...,6).Large systematic change were observed in the vanadium and oxygen x-ray spectra, reflecting the effects of electrochemical reduction associated with the Li-ion insertion. Spectral shape analysis indicates that a large fraction of the vanadium ions have been reduced to V3+ ions for the highest degree of, x=6. Neverrtheless, further lithiation may be possible, in view of the linear development of the vanadium and oxygen bands on charge uptake.

Place, publisher, year, edition, pages
2004. Vol. 95, no 11, 6444-6449 p.
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Inorganic Chemistry
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URN: urn:nbn:se:uu:diva-67738DOI: doi:10.1063/1.1713041OAI: oai:DiVA.org:uu-67738DiVA: diva2:95649
Available from: 2007-02-13 Created: 2007-02-13 Last updated: 2011-01-12

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Duda, LaurentNordgren, JosephGustafsson, Torbjörn

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