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Oxygen Exchange on a Highly Oriented Thin Film Electrode

Published online by Cambridge University Press:  21 March 2011

Y. L. Yang ,
C. L. Chen ,
G. P. Luo ,
C. W. Chu  and
A. J. Jacobson
Y. L. Yang
Affiliation:
Materials Research Science and Engineering Center University of Houston Houston, TX 77204-5500, USA
C. L. Chen
Affiliation:
Texas Center for Superconductivity University of Houston Houston, TX 77204-5932, USA
G. P. Luo
Affiliation:
Texas Center for Superconductivity University of Houston Houston, TX 77204-5932, USA
C. W. Chu
Affiliation:
Texas Center for Superconductivity University of Houston Houston, TX 77204-5932, USA
A. J. Jacobson
Affiliation:
Materials Research Science and Engineering Center University of Houston Houston, TX 77204-5500, USA
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Abstract

The cathodic kinetic processes on a highly oriented LSCO thin film electrode supported on YSZ(100) surface were studied with a 3-probe ac impedance method under varying bias potential and annealing temperatures. Three distinctive features observed in the impedance spectra were assigned to contributions from the ionic conduction of the YSZ electrolyte, the ionic transfer at the LSCO/YSZ interface, and the oxygen exchange on the LSCO electrode surface. The changes of the three features with respect to the annealing history and bias potential were measured. The impedance data were analyzed using an equivalent circuit model: (RelCel)(RinterfaceQinterface)(RsurfCsurf).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 654: Symposia AA – Structure-Property Relationships of Oxide Surfaces & Interfaces , 2000 , AA3.3.1
Copyright
Copyright © Materials Research Society 2001

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