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 language | English |
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Title of host publication | Transport-structure relations in fast ion and mixed conductors |
Subtitle of host publication | proceedings of the 6th Risø International Symposium on Metallurgy and Materials Science, 9-13 September 1985 |
Editors | F.W. Poulsen |
Place of Publication | Roskilde |
Publisher | Risø National Laboratory |
Pages | 323-328 |
Number of pages | 6 |
ISBN (Print) | 8755011373 |
Publication status | Published - 1 Dec 1985 |
Event | 6th Risø International Symposium on Metallurgy and Materials Science 1985 - Roskilde, Denmark Duration: 9 Sept 1985 → 13 Sept 1985 Conference number: 6 |
Publication series
Name | Proceedings of the Risø International Symposium on Metallurgy and Materials Science |
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Publisher | Risø National Laboratory |
Volume | 6 |
ISSN (Print) | 0108-8599 |
Conference
Conference | 6th Risø International Symposium on Metallurgy and Materials Science 1985 |
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Country/Territory | Denmark |
City | Roskilde |
Period | 9/09/85 → 13/09/85 |