This work evaluates the effects of the sintering temperature (800°C, 900°C, 1000°C) of SrTi 1-x Fe x O 3-δ (x = 0.35, 0.5, 0.7) porous electrodes on their electrochemical performance as potential oxygen electrode materials of solid oxide cells. The materials were prepared by a solid-state reaction method and revealed the expected cubic perovskite structure. After milling, the powders were characterised by a sub-micrometre particle size with high sinter-activity. It was shown that the lowest area specific resistance was achieved after sintering SrTi 0.65 Fe 0.35 O 3 electrodes at 1000°C, and SrTi 0.5 Fe 0.5 O 3 and SrTi 0.30 Fe 0.70 O 3 electrodes at 800°C, which can be considered to be a relatively low temperature. In general, EIS measurements showed that increasing the Fe content results in lowered electrode polarisation and a decrease of the series resistance. Even though the studied materials have much lower total conductivities than state-of-the-art electrode materials (e.g. (La,Sr)(Co,Fe)O 3 ), the polarisation resistances obtained in this work can be considered low.
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