Journal article

Authors list: Janek, J

Publication year: 1994

Pages: 1213-1223

Journal: Berichte der Bunsengesellschaft für physikalische Chemie

Volume number: 98

Issue number: 10

ISSN: 0005-9021

eISSN: 0005-9021

DOI Link: https://doi.org/10.1002/bbpc.19940981002

Publisher: Wiley

Abstract: 
In investigations of the isothermal transport properties of mixed conductors the dynamical coupling between ionic and electronic partial fluxes is usually neglected. Within the formalism of (linear) irreversible thermodynamics this assumption is expressed by a vanishing cross coefficient L(12) in the matrix of the phenomenological transport coefficients, By analysing the phenomenological flux equations for cation vacancies and electron holes, experiments for the determination of the cross coefficient are defined. Experimental results for the coupling effect in Co1-deltaO are presented, which have been obtained from three independent techniques. The results are discussed in the light of previous theoretical considerations. It is shown that a strong coupling between cation vacancies and electron holes exists in the case of C1-deltaO. To account for this coupling, an effective charge number of ions has to be introduced for use in the formulation of ionic fluxes.

Harvard Citation style: Janek, J. (1994) Coupling between ionic and electronic fluxes in mixed ionic/electronic conductors : Experiments on CO1- Delta-O, Berichte der Bunsengesellschaft für physikalische Chemie, 98(10), pp. 1213-1223. https://doi.org/10.1002/bbpc.19940981002

APA Citation style: Janek, J. (1994). Coupling between ionic and electronic fluxes in mixed ionic/electronic conductors : Experiments on CO1- Delta-O. Berichte der Bunsengesellschaft für physikalische Chemie. 98(10), 1213-1223. https://doi.org/10.1002/bbpc.19940981002