Synthesis of new Mn/Ti containing perovskites and examination of their potential for use as solid oxide fuel cell electrodes

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Abstract

In this paper we report the synthesis of a series of new Mn/Ti containing perovskites, La1−xMnxMn1−xTixO3−δ, for investigation of their potential for use as solid oxide fuel cell electrodes, particularly anodes. Single-phase samples could be achieved for x ≤ 0.4. Above this level, La2Ti2O7 impurities were found. Conductivity measurements showed electronic conductivity up to a maximum of 12 S cm−1 at 850°C in air. While the samples were shown to be stable in both air and 5% H2/N2, the conductivities in the latter were significantly lower (≈0.4 S cm−1), which would be an issue for potential anode applications.

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