Thin mixed conducting surface layers of oxides with fluorite structure

K.J. de Vries*, M.P. van Dijk, H. Kruidhof, A.J. Burggraaf

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

Abstract

Thin (150 and 600 nm) electrode players of mixed p-type conducting Ce//0//. //7Tb//0//. //3O//1//. //8//5// plus //y (CT30) were RF-sputtered onto ionic conducting ceramic Zr//0//. //5Gd//0//. //5O//1//. //7//5 substrates (ZG50s). Electrode polarization of the electrode combination P//O//2 /Au/CT30/ZG50s was studied in a three electrode device. Cathodic polarizations prevail over anodic ones. The electrode resistance decreased in the presence of sputtered layers. However, p-type conducting CT30 layers did not improve the electrode behaviour. The thermal activation energy of working electrodes including CT30 layers is about 125 kJ mol** minus **1 irrespective of layer thickness and P//O//2 value. The results suggest a rate determining mechanism with oxygen adsorption at the oxide layers followed by a diffusion step.

Original languageEnglish
Title of host publicationTransport-structure relations in fast ion and mixed conductors
Subtitle of host publicationproceedings of the 6th Risø International Symposium on Metallurgy and Materials Science, 9-13 September 1985
EditorsF.W. Poulsen
Place of PublicationRoskilde
PublisherRisø National Laboratory
Pages323-328
Number of pages6
ISBN (Print)8755011373
Publication statusPublished - 1 Dec 1985
Event6th Risø International Symposium on Metallurgy and Materials Science 1985 - Roskilde, Denmark
Duration: 9 Sep 198513 Sep 1985
Conference number: 6

Publication series

NameProceedings of the Risø International Symposium on Metallurgy and Materials Science
PublisherRisø National Laboratory
Volume6
ISSN (Print)0108-8599

Conference

Conference6th Risø International Symposium on Metallurgy and Materials Science 1985
CountryDenmark
CityRoskilde
Period9/09/8513/09/85

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