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WooChul Jung and Harry L. Tuller A New Model Describing Solid Oxide Fuel Cell Cathode Kinetics: Model Thin Film SrTi1-xFexO3-δ Mixed Conducting Oxides–a Case Study Advanced Energy Materials 1

Article first published online: 8 SEP 2011 | DOI: 10.1002/aenm.201100164

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A model mixed conducting perovskite materials system, SrTi1-xFexO3-δ, is selected, offering the ability to control both the levels of ionic and electronic conductivity as well as the energy band structure. This, in combination with simplified electrode geometry, serves to demonstrate that the rate of oxygen exchange for mixed conducting cathode materials is largely determined by the availability of minority carriers–electrons in the excited state.

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