Long-Term Stability of LSM-YSZ Based Cathodes

A transmission line based model was successfully applied to study the ageing effect in LSM-YSZ cathodes after being exposed to humidified air at 900 °C for up to 3000 h. A decrease in the YSZ conductivity was correlated with the formation of the less conducting monoclinic zirconia. The amount of La2...

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Bibliographic Details
Published inECS transactions Vol. 57; no. 1; pp. 2027 - 2036
Main Authors Baqué, Laura Cecilia, Jørgensen, Peter Stanley, Hansen, Karin Vels, Søgaard, Martin
Format Journal Article
LanguageEnglish
Published The Electrochemical Society, Inc 01.01.2013
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Summary:A transmission line based model was successfully applied to study the ageing effect in LSM-YSZ cathodes after being exposed to humidified air at 900 °C for up to 3000 h. A decrease in the YSZ conductivity was correlated with the formation of the less conducting monoclinic zirconia. The amount of La2Zr2O7, present in the non-aged samples, decreases with ageing time increasing the number of active sites for charge transfer between LSM and YSZ as well as the LSM conductivity values.
ISSN:1938-5862
1938-6737
DOI:10.1149/05701.2027ecst