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Pd, Pt and ZrO2-Pt Films Prepared by Mocvd and Their Electrochemical Properties

Published online by Cambridge University Press:  15 February 2011

J.A. Montes De Oca ,
J.R. Vargas  and
J. Godinez
J.A. Montes De Oca
Affiliation:
National Polytechnic Institute, ESIQIE, Dept. of Metallurgical Engineering AP 75-874, México 07300, D.F., MEXICO
J.R. Vargas
Affiliation:
National Polytechnic Institute, ESIQIE, Dept. of Metallurgical Engineering AP 75-874, México 07300, D.F., MEXICO
J. Godinez
Affiliation:
National Polytechnic Institute, ESIQIE, Dept. of Metallurgical Engineering AP 75-874, México 07300, D.F., MEXICO
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Abstract

Pd, Pt and ZrO2-Pt films were prepared by metal organic chemical vapor deposition (MOCVD) as electrodes for zirconia solid electrolyte and their electrochemical properties were examined by impedance spectroscopy. Carbon containing films (Pt-C and Pd-C) consisted of agglomerated fine particles (2-5 nm in diameter) exhibit higher electrode conductivities than that of conventional Pt paste electrodes at temperatures below 873 K. The sintering of the fine particles and/or oxidation of impurity carbon or Pd spoil their electrochemical performance. On the other hand, two-phase ZrO2-Pt films show promise as electrode material for zirconia electrolyte at low temperatures (below 973 K) because of their higher conductivity than Pt paste electrodes and their thermal stability.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 548: Symposia EE – Solid State Ionics V , 1998 , 709
Copyright
Copyright © Materials Research Society 1999

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References

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