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Elsevier, Solid State Ionics, 1(184), p. 39-41

DOI: 10.1016/j.ssi.2010.10.015

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Electrochemical properties of novel SOFC dual electrode La0.75Sr0.25Cr0.5Mn0.3Ni0.2O3−δ

Journal article published in 2011 by T. Delahaye, T. Jardiel ORCID, O. Joubert, R. Laucournet, G. Gauthier, M. T. Caldes
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The perovskite La0.75Sr0.25Cr0.5Mn0.3Ni0.2O3−δ (LSCMMn0.30Ni0.20) was evaluated as potential electrode for solid oxide fuel cells. The electrochemical performances of LSCMMn0.30Ni0.20 for hydrogen oxidation and oxygen reduction reactions were studied at 800 °C. Symmetrical cells LSCMMn0.30Ni0.20/YSZ/LSCMMn0.30Ni0.20 were studied by electrochemical impedance spectroscopy. The total conductivity of LSCMMn0.30Ni0.20 is 22 S cm−1 in air and 0.8 S cm−1 under wet 5% H2/Ar at 800 °C. The area specific resistance (ASR) at 800 °C for hydrogen oxidation reaction is 1 Ω cm2. The ASR for oxygen reduction reaction is 1.6 Ω cm2. An ageing study during 24 h shows a relatively good stability of the electrochemical performances. LSCMMn0.3Ni0.2 seems to be a promising dual electrode for a symmetrical SOFC.