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Surface Oxygen Exchange Kinetics in Oxide-Ion Conducting Solids

Published online by Cambridge University Press:  25 February 2011

Bernard A. Boukamp ,
H.J.M. Bouwmeester ,
H. Verweij  and
A.J. Burggraaf
Bernard A. Boukamp
Affiliation:
University of Twente, Faculty of Chemical Technology, laboratory for Inorganic Materials Science and Catalysis, P.O. Box 217, 7500 AE Enschede, The Netherlands
H.J.M. Bouwmeester
Affiliation:
University of Twente, Faculty of Chemical Technology, laboratory for Inorganic Materials Science and Catalysis, P.O. Box 217, 7500 AE Enschede, The Netherlands
H. Verweij
Affiliation:
University of Twente, Faculty of Chemical Technology, laboratory for Inorganic Materials Science and Catalysis, P.O. Box 217, 7500 AE Enschede, The Netherlands
A.J. Burggraaf
Affiliation:
University of Twente, Faculty of Chemical Technology, laboratory for Inorganic Materials Science and Catalysis, P.O. Box 217, 7500 AE Enschede, The Netherlands
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Abstract

The surface oxygen exchange on oxides with high oxygen ion mobility is modelled with a two step reaction with adsorbed mono-atomic oxygen species as intermediate. Interpretation of the Po2 dependence of the exchange rates, following from this model, indicates that these adsorbed oxygen atoms are singly charged.

For the stabilized δ-Bi2O3 solid electrolyte a good agreement has been found between the isotope exchange model and the electrochemical study of the oxygen exchange using gold electrodes. For the mixed La-Sr cobaltite perovskite a change in the surface exchange reaction is observed going from room temperature to 600°C. Indications are that above 450°C the bulk exchange is rate limiting with a (Po2)−1 dependence while below this temperature it is assumed that the dissociative adsorption is rate limiting with a (Po2)1/2 dependence.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 293: Symposium U – Solid State Ionics III , 1992 , 361
Copyright
Copyright © Materials Research Society 1993

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References

1. Winter, E.S.R., Adv. in Catalysis 10, 196 (1958).Google Scholar
2. Tannhauser, D.S, Kilner, J.A. and Steele, B.C.H., Nucl. Inst. and Methods in Physical Research 218, 504 (1983).Google Scholar
3. Kilner, J.A., Steele, B.C.H. and Ilkov, L., Solid State Ionics 12, 12 (1984).Google Scholar
4. Steele, B.C.H., Kilner, J.A., Dennis, P.F. and Tannhauser, D.S., in Ceramic Surfaces and Surface Treatments, edited by Morrel, R. and Nicholas, G., British Ceramic Proc., Vol. 34, 53 (1984).Google Scholar
5. Boukamp, B.A., Vinke, I.C., Vries, K.J. de and Burggraaf, A.J., Solid State Ionics 32/33, 918 (1989).Google Scholar
6. Steele, B.C.H., Kilner, J.A., Dennis, P.F., McHale, A.E., Hemert, M. van and Burggraaf, A.J., Solid State Ionics 18&9, 1038 (1986).Google Scholar
7. Vinke, I.C., Boukamp, B.A., Vries, K.J. de and Burggraaf, A.J., Solid State Ionics 51, 249 (1992).Google Scholar
8. Vinke, I.C., Boukamp, B.A., Vries, K.J. de and Burggraaf, A.J., Solid State Ionics 58, 33 (1992).Google Scholar
9. Boukamp, B.A., Vries, K.J. de and Burggraaf, A.J., in Non-Stoichiometric Compounds, Surfaces, Grainboundaries and Structural Defects, edited by Nowotny, J. and Weppner, W. (Kluwer, Deventer, 1989) pp. 299–309.Google Scholar
10. Kruidhof, H., Seshan, K., Lippens, B.C. Jr., Gellings, P.J. and Burggraaf, A.J., Mat. Res. Bull. 22, 1635 (1987).Google Scholar
11. Boukamp, B.A., Hassel, B.A. van, Vinke, I.C., Vries, K.J. de and Burggraaf, A.J., Proceedings of 2nd Int. Symp. on Electrochemical Impedance Spectroscopy, Santa Barbara July 1992, edited by Macdonald, D.D., to be published in a special issue of Electrochim. Acta.Google Scholar