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A class of double‐perovskite compounds display fast oxygen ion diffusion and high catalytic activity toward oxygen reduction while maintaining excellent compatibility with the electrolyte. The astoundingly extended stability of NdBa1−xCaxCo2O5+δ (NBCaCO) under both air and CO2‐containing atmosphere is reported along with excellent electrochemical performance by only Ca doping into the A site of NdBaCo...
Doppelperowskite werden von G. Kim und Mitarbeitern in ihrer Zuschrift auf S. 13280 ff. als eine neue Klasse von Kathodenmaterialien für Festoxid‐Brennstoffzellen vorgestellt. Die verbesserte Stabilität von NdBa0.75Ca0.25Co2O5+δ beruht auf der erhöhten Elektronenaffinität der beweglichen Sauerstoffspezies sowie der höheren Redoxstabilität, die durch Ca‐Dotierung an den A‐Positionen von NdBaCo2O5+δ...
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