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Preparation and Hydrogen Pumping Characteristics of BaCe0.8Y0.2O3-δ Thin Film

Published online by Cambridge University Press:  01 February 2011

T. H. Lee ,
B. J. Harder ,
C. Zuo ,
S. E. Dorris  and
U. Balachandran
T. H. Lee
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439, USA
B. J. Harder
Affiliation:
Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
C. Zuo
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439, USA
S. E. Dorris
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439, USA
U. Balachandran
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439, USA
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Abstract

Thin films of BaCe0.8Y0.2O3-δ (BCY) were prepared by colloidal spray deposition. Dense, crack-free BCY films having a grain size of 2–7 μm were successfully deposited on NiO/BCY substrates. Electrochemical hydrogen pumping with the BCY films showed that the maximum current density increased with temperature. The maximum current density was sensitive to the moisture in the cathode gas; the value obtained with a dry cathode gas was only half that with a wet cathode gas. A very high hydrogen-pumping current density of 3.4 A/cm2 was measured at 700°C with an applied voltage of 1.5 V.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 835: Symposium K – Solid-State Ionics , 2004 , K1.5
Copyright
Copyright © Materials Research Society 2005

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References

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