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In Situ Electrochemical Scanning Probe Microscopy of Lithium Battery Cathode Materials: Vanadium Pentoxide (V2O5)

Published online by Cambridge University Press:  11 February 2011

Joseph W. Bullard III  and
Richard L. Smith
Joseph W. Bullard III
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology Cambridge, Massachusetts 02139, USA
Richard L. Smith
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology Cambridge, Massachusetts 02139, USA
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Abstract

Atomic force microscopy was used to characterize the structural evolution of the V2O5(001) surface during the electrochemical cycling of lithium. With Li insertion, nanometer-scale pits develop at the V2O5(001) surface. The pits first appear as the composition of the crystal approaches Li0.0006V2O5. Pit nucleation and growth continue through further discharge, resulting in a micro-porous (001) surface morphology. During subsequent Li extraction, cracks develop along the V2O5 <010> axis. Surface regions in the vicinity of these cracks “swell” during ensuing lithiation reactions, suggesting that the cracks locally facilitate Li uptake.

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 , EE7.10
Copyright
Copyright © Materials Research Society 2003

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References

REFERENCES

1. Schöllhorn, R., Agnew. Chem. Int. Ed. Engl, 19, 983 (1980)Google Scholar
2. Jacobson, A. J. in Solid State Chemistry Compounds, Eds. Cheetham, A.K. and Day, P. (Clarendon, Oxford, 1992), p. 182 Google Scholar
3. Dickens, P.G., French, S.J., Hight, A.T., and Pye, MF., Mat. Res. Bull., 14, 1295 (1979)Google Scholar
4. West, K., Zachau-Christiansen, B., Jacobsen, T., and Skaarup, S., Solid State Ionics, 76, 15 (1995)Google Scholar
5. Prosini, P.P., Xia, Y., Fujieda, T., Vellone, R., Shikano, M., Sakai, T., Electroch. Acta, 46 2623 (2001)Google Scholar
6. Smith, R.L., Lu, W., and Rohrer, G.S., Surface Science, 322, 293 (1995)Google Scholar
7. Smith, R.L., Rohrer, G.S., Lee, K.S., Seo, D.-K., and Whangbo, M.-H., 367, 87 (1996)Google Scholar