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Characterisation of oxide anodes for fuel cells

Mixed oxides of the La2Srn.2Tin03n+i system are related to the perovskite family AmBm03m+2, characterised by the presence o f an excess of oxygen along preferential directions. Removal of this excess of oxygen can be achieved in order to increase the potential for ionic conductivity along the preferential directions ([110]p). In addition to potential ion conductivity, Ti4+ is easily reduced to Ti3+, so that electronic conductivity can also be increased and the basis for high performance anodes for solid oxide fuel cells (SOFCs) might be realised.