Journal
ELECTROCHIMICA ACTA
Volume 47, Issue 19, Pages 3211-3217Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0013-4686(02)00241-4
Keywords
bifunctional oxygen electrodes; zn/air cells; La0.6Ca0.4CoO3 perovskite; in-situ X-ray absorption; X-ray diffraction
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The chemical stability of La0.6Ca0.4CoO3 perovskite as an electrocatalyst in bifunctional oxygen electrodes has been studied by exsitu and in-situ X-ray absorption spectroscopy and X-ray diffraction measurements. The catalyst was investigated ex-situ as a powder mixed with BN, and in-situ on carbon supports in bilayer air electrodes at different potentials in an electrochemical cell with an alkaline electrolyte. It was found to be stable for at least 1300 h in electrodes operated under the conditions of rechargeable Zn/air cells. Published by Elsevier Science Ltd.
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