Affordable Access

Publisher Website

X-ray diffraction and X-ray absorption studies of the structural modifications induced by electrochemical lithium intercalation into V2O5

Authors
Journal
Electrochimica Acta
0013-4686
Publisher
Elsevier
Publication Date
Volume
35
Issue
5
Identifiers
DOI: 10.1016/0013-4686(90)90086-f
Disciplines
  • Chemistry

Abstract

Abstract XRD and XRA analysis were performed on electroformed Li x V 2O 5 bronzes in order to follow structural evolutions in the V 2O 5 host lattice along with the occurence of the lithium intercalation. In situ XRD analysis has shown a splitting of the Li x V 2O 5 diffraction peaks in the −0.3 to 0.4 Li per V 2O 5-insertion range which correlates well with a splitting of the electrochemical process itself. According to the present XRD data, no crystallized phase, besides LiV 2O 5, is generated when electroreduction proceeds from 1 to 2 Li per V 2O 5 but a loss of the long range order occurs for the highest lithium contents (2 li per V 2O 5). Preliminary XRA analysis has shown the appearance of local disorders around the vanadium atom as the electroreduction proceeds: firstly modifications of the VV correlations when electroreduction is performed until 0.9 electron per mole of V 2O 5 and thereafter modifications of the VO correlations for the deepest electroreduction (≈2.4 electron per mole of V 2O 5).

There are no comments yet on this publication. Be the first to share your thoughts.