Journal
SOLID STATE IONICS
Volume 140, Issue 3-4, Pages 241-248Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0167-2738(01)00844-X
Keywords
X-ray absorption; V2O5 xerogel; Li intercalation
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We studied the electronic structure of a chemically Li-intercalated V2O5 xerogel. The technique used in the study was V 2p and O 1s X-ray absorption spectroscopy (XAS). The V ions in the as-prepared V2O5 xerogel are mostly in a pentavalent V5(+) state. The spectra show that the V ions are partially reduced to V4(+) and V3(+) states upon Li intercalation. The results also show that low Li intercalation (x 1), this mechanism saturates and leads to Li,O formation. (C) 2001 Elsevier Science B.V. All rights reserved.
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