Northwestern University

Matthew Lu

Scott A Barnett

Shan-Lin Zhang

Oxygen electrodes are provided, comprising a perovskite compound having Formula (I), Sr(TiFeCo)Owherein 0.90&#x2265;x&#x2265;0.40 and 0.02&#x2265;y&#x2265;0.30. Electrochemical devices comprising such oxygen electrodes are also provided, comprising a counter electrode in electrical communication with the oxygen electrode, and a solid oxide electrolyte between the oxygen electrode and the counter electrode. Methods of using such electrochemical devices are also provided, comprising exposing the oxygen electrode to a fluid comprising Ounder conditions to induce the reaction O+4e&#x2192;2O, or to a fluid comprising Ounder conditions to induce the reaction 2O&#x2192;O+4e.

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Evanston, IL, United States of America

Matthew Lu