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Li Ion diffusion measurements in crystalline and amorphous V2O5 thin-film battery cathodes

Published online by Cambridge University Press:  10 February 2011

Jeanne M. McGraw
Affiliation:
National Renewable Energy Laboratory, Golden, Colorado USA
Christian S. Bahn
Affiliation:
National Renewable Energy Laboratory, Golden, Colorado USA
Philip A. Parilla
Affiliation:
National Renewable Energy Laboratory, Golden, Colorado USA
John D. Perkins
Affiliation:
National Renewable Energy Laboratory, Golden, Colorado USA
Dennis W. Readey
Affiliation:
National Renewable Energy Laboratory, Golden, Colorado USA Colorado School of Mines, Golden, Colorado USA
David S. Ginley
Affiliation:
National Renewable Energy Laboratory, Golden, Colorado USA
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Abstract

Thin films of crystalline and amorphous V2O5 were deposited by pulsed laser deposition (PLD) and the chemical diffusion coefficients, , were measured by the potentiostatic intermittent titration technique (PITT). In crystalline V2O5 films, the maximum and minimum were found to be 1.7 × 10−2 cm2/s and 5.8 × 10−15 cm2/s respectively, with a general trend for to rise in single-phase regions. The changes in correlated well to the known phases in LiV2O5. In amorphous V2O5 films, exhibited a smooth, continuous decrease as the Li concentration increased.

Type
Research Article
Copyright
Copyright © Materials Research Society 2000

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References

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