Mixed conductors

Mixed conductors are materials with a significant fraction of ionic as well as electronic conduction. This mixed conduction allows for the transport of a formally neutral species in a solid (e.g. oxygen in SrTiO3) and is a prerequisite of many kinetic phenomena. Electrode materials (in batteries as well as in solid oxide fuel cells) are typically mixed conductors, and also oxidation catalysts often exhibit electronic as well as ionic conductivity.

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