%0 Journal Article
%A López Paz, Sara Almudena
%A Marín Gamero, Rafael
%A Martínez de Irujo Labalde, Xabier
%A Sánchez Marcos, Jorge
%A Perez Coll, Domingo
%A Alario y Franco, Miguel Ángel
%A García Martín, Susana
%T YBaCuO-type perovskites as potential air electrodes for SOFCs. The case of YSr2Cu2FeO7+δ
%D 2021
%@ 2050-7496
%U https://hdl.handle.net/20.500.14352/92116
%X The electrochemical properties of YSr2Cu2FeO7+d with YBaCuO-type structure have been studied. The temperature dependent oxygen content of this oxide has a marked influence on its p-type conducting behavior, since topochemical oxygen release occurs on heating above 673 K while reversible oxygen uptake takes place on cooling. Mixed valence Fe3+/Fe4+ and Cu2+/Cu3+ in combination with anion vacancies within the oxygen-sublattice suggest mixed (electronic and ionic) conductivity in this oxide. Electrochemical measurements indicate that YSr2Cu2FeO7+d shows high oxygen reduction reaction activity at intermediate temperatures, revealing its potential applications as an air electrode in SOFCs.
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