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X-ray Absorption Spectroscopy study of lithium insertion mechanism in Li1.2V3O8

Published online by Cambridge University Press:  11 February 2011

N. Bourgeon ,
J. Gaubicher ,
D. Guyomard  and
G. Ouvrard
N. Bourgeon
Affiliation:
Institut des Matériaux Jean Rouxel, 2 rue de la Houssinière, BP32229, 44322 Nantes, France
J. Gaubicher
Affiliation:
Institut des Matériaux Jean Rouxel, 2 rue de la Houssinière, BP32229, 44322 Nantes, France
D. Guyomard
Affiliation:
Institut des Matériaux Jean Rouxel, 2 rue de la Houssinière, BP32229, 44322 Nantes, France
G. Ouvrard
Affiliation:
Institut des Matériaux Jean Rouxel, 2 rue de la Houssinière, BP32229, 44322 Nantes, France
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Abstract

X-ray absorption spectroscopy (XAS) measurements were performed to thoroughly understand lithium insertion mechanism in Li1.2V3O8. The evolution of the absorption pre-edge and edge corresponding to the local environment of the vanadium in the bulk has been examined by ex-si tu XAS measurement at the vanadium K edge, during the first discharge-charge cycle. The results show a regular and reversible evolution of the pre-edge intensity, the edge position and the vanadium environment toward nearly perfect VO6 octahedra.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 756: Symposia EE/FF – Solid-State Ionics – Materials for Fuel Cells and Fuel Processors , 2002 , EE7.3
Copyright
Copyright © Materials Research Society 2003

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References

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