XAS and electrochemical characterization of lithium intercalated V2O5 xerogels

Stefano Passerini, William H. Smyrl, Mario Berrettoni, Roberto Tossici, Mauricio Rosolen, Roberto Marassi, Franco Decker

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Abstract

The use of sol-gel processes in the preparation of cathode materials is of growing interest because of their ease and flexibility. The electrochemical properties, e.g. the rate of lithium intercalation, appear to depend on the morphology of the thin-film vanadium oxide xerogels that can be changed by modifying the preparation. In this context, in order to extend the study to bulk materials, xerogel powder samples with surface areas in the range 2-5 m2/g have been prepared from pure vanadium pentoxide hydrogels, or in the form of composites, from carbon powder added to hydrogels. The electrochemical properties have been correlated with the morphological and structural changes induced by the presence of carbon using X-ray and XAS spectroscopy.
Original languageEnglish
Pages (from-to)1 - 14
Number of pages14
JournalSolid State Ionics
Volume90
Issue number1-4
Publication statusPublished - Sep 1996
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electrochemistry
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Passerini, S., Smyrl, W. H., Berrettoni, M., Tossici, R., Rosolen, M., Marassi, R., & Decker, F. (1996). XAS and electrochemical characterization of lithium intercalated V2O5 xerogels. Solid State Ionics, 90(1-4), 1 - 14.