Publication

Back to overview

Barium Cerate with yttria as proton conducting electrolyte

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2012
Author Navickas E., Braun A., Chen Q., Abakeviien B., Kubel F., Tamulevicius S., Fleig J.,
Project Effect of lattice volume and imperfections on the proton-phonon coupling in proton conducting lanthanide transition metal oxides: High pressure and high temperature neutron and impedance studies
Show all

Original article (peer-reviewed)

Journal Book Series: Radiation Interaction with Material and Its Use in Technologies
Volume (Issue) Book Editor: Grigonis, A(4th International Conference on Radiation Interact)
Page(s) 107 - 110
Title of proceedings Book Series: Radiation Interaction with Material and Its Use in Technologies
DOI ISSN 1822508X

Open Access

Abstract

Barium cerate substituted with yttria (BCY) demonstrates high proton conductivity with low activation energy, and thus is a potential candidate as electrolyte in intermediate temperature solid oxide fuel cells (SOFC). In this contribution the proton conductivity of BCY doped with different concentrations of yttria (5, 10 and 20 mol%) was investigated. Proton conductivity of isostatically pressed pellets was measured by electrochemical impedance spectroscopy in dry and wet nitrogen atmospheres. It was found that the substitution level has significant influence on the bulk conductivity, whereas atmosphere has little influence. In contrast, the effect of the atmosphere for conductivity of grain boundaries is significant.
-