Solid-oxide Fe–air rechargeable battery using Fe–Ce(Mn, Fe)O2 for low temperature operation

Abstract

The reaction rate constant of Fe oxidation and reduction can be much increased through mixing with Ce_0.6Mn_0.3Fe_0.1O₂ (CMF), and when CMF mixed with Fe was set into the fuel chamber of a solid state Fe–air rechargeable battery, a discharge potential of ca. 1 V and a discharge capacity of 600 mA h g_Fe⁻¹ were achieved at 673 K.