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Dielectric Properties of Pd/Y8Z Composites

Published online by Cambridge University Press:  10 February 2011

Mark G.H.M. Hendriks ,
Henk Verwei  and
Manon P. Timmerman
Mark G.H.M. Hendriks
Affiliation:
Timmerman-Oude Wolbers University of Twente, Faculty of Chemical Technology, Laboratory of Inorganic Materials Science, m.g.h.m.hendriks@ct.utwente.nl P.O. Box 217, 7500 AE Enschede, The Netherlands
Henk Verwei
Affiliation:
Timmerman-Oude Wolbers University of Twente, Faculty of Chemical Technology, Laboratory of Inorganic Materials Science, m.g.h.m.hendriks@ct.utwente.nl P.O. Box 217, 7500 AE Enschede, The Netherlands
Manon P. Timmerman
Affiliation:
Timmerman-Oude Wolbers University of Twente, Faculty of Chemical Technology, Laboratory of Inorganic Materials Science, m.g.h.m.hendriks@ct.utwente.nl P.O. Box 217, 7500 AE Enschede, The Netherlands
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Abstract

Impedance measurements are performed on Pd/Y8Z composites. At 500 'C a 2- 108 times enhancement of the permittivity of the composite at a Pd composition near the percolation threshold for electronic conductivity relative to Y8Z at room temperature is obtained. At high frequencies, the enhancement decreases to a value comparable to geometric capacity of the composite as the double-layer capacity diminishes. At relatively low temperatures the capacity of Y8Z, due to ionic polarisability, increases with temperature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 575: Symposium CC – New Materials for Batteries & Fuel Cells , 1999 , 429
Copyright
Copyright © Materials Research Society 2000

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References

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