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Oxide Ion Transport in Bismuth-Based Materials

Published online by Cambridge University Press:  11 February 2011

Rose-Noëlle Vannier ,
Edouard Capoen ,
Caroline Pirovano ,
César Steil ,
Guy Nowogrocki ,
Gaëtan Mairesse ,
Richard J. Chater ,
Stephen J. Skinner  and
John A. Kilner
Rose-Noëlle Vannier
Affiliation:
Laboratoire de Cristallochimie et Physicochimie du Solide, CNRS UMR 8012, ENSCL, Université des Sciences et Technologies de Lille, B.P. 108, 59652 Villeneuve d'Ascq Cedex, France
Edouard Capoen
Affiliation:
Laboratoire de Cristallochimie et Physicochimie du Solide, CNRS UMR 8012, ENSCL, Université des Sciences et Technologies de Lille, B.P. 108, 59652 Villeneuve d'Ascq Cedex, France
Caroline Pirovano
Affiliation:
Laboratoire de Cristallochimie et Physicochimie du Solide, CNRS UMR 8012, ENSCL, Université des Sciences et Technologies de Lille, B.P. 108, 59652 Villeneuve d'Ascq Cedex, France
César Steil
Affiliation:
Laboratoire de Cristallochimie et Physicochimie du Solide, CNRS UMR 8012, ENSCL, Université des Sciences et Technologies de Lille, B.P. 108, 59652 Villeneuve d'Ascq Cedex, France
Guy Nowogrocki
Affiliation:
Laboratoire de Cristallochimie et Physicochimie du Solide, CNRS UMR 8012, ENSCL, Université des Sciences et Technologies de Lille, B.P. 108, 59652 Villeneuve d'Ascq Cedex, France
Gaëtan Mairesse
Affiliation:
Laboratoire de Cristallochimie et Physicochimie du Solide, CNRS UMR 8012, ENSCL, Université des Sciences et Technologies de Lille, B.P. 108, 59652 Villeneuve d'Ascq Cedex, France
Richard J. Chater
Affiliation:
Centre for Ion Conducting Membranes (CICM), Department of Materials, Imperial College London, Prince Consort Road, London SW7 2BP, UK
Stephen J. Skinner
Affiliation:
Centre for Ion Conducting Membranes (CICM), Department of Materials, Imperial College London, Prince Consort Road, London SW7 2BP, UK
John A. Kilner
Affiliation:
Centre for Ion Conducting Membranes (CICM), Department of Materials, Imperial College London, Prince Consort Road, London SW7 2BP, UK
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Abstract

When used as ceramic membranes for the electrically driven separation of oxygen from air, BIMEVOX materials allow the production of high oxygen fluxes at moderate temperature, 300–600°C. However, 18O/16O Isotope Exchange Depth Profile Technique revealed low kinetics of oxygen transfer at the surface of these ceramics when studied under equilibrium. These kinetics were considerably enhanced when a current was applied. The same membranes were characterized under working conditions using X-ray synchrotron and neutron radiations. Their dynamical transformation under bias was confirmed and explained by a slight reduction of the BIMEVOX electrolyte under working conditions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 756: Symposia EE/FF – Solid-State Ionics – Materials for Fuel Cells and Fuel Processors , 2002 , EE8.7
Copyright
Copyright © Materials Research Society 2003

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References

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