Abstract
Prototype secondary iron/air cells comprising pressed-type iron electrodes and oxygen electrodes of some oxide pyrochlores have been assembled and subjected to electrochemical charge/discharge tests for over 150 cycles at various load currents. The cells are found to exhibit little deterioration in performance. Oxygen electrodes using PbBiRu 2O 7− y oxide pyrochlores are superior to those with Pb 2Ir 2O 7− y , except under high-load currents.
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