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

摘要

In this paper we report the synthesis of a series of new Mn/Ti containing perovskites, La_1?xMn_xMn_1?xTi_xO_3?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.