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Journal Article

Fast oxygen exchange kinetics of pore-free Bi1-xSrxFeO3-δ thin films

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Merkle,  R.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Stuhlhofer,  B.
Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society;

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Habermeier,  H.-U.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;
Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society;
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Maier,  J.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Heifets,  E.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Wedig, A., Merkle, R., Stuhlhofer, B., Habermeier, H.-U., Maier, J., & Heifets, E. (2011). Fast oxygen exchange kinetics of pore-free Bi1-xSrxFeO3-δ thin films. Physical Chemistry Chemical Physics, 13(37), 16530-16533.


Cite as: https://hdl.handle.net/21.11116/0000-000E-BFFF-D
Abstract
The oxygen incorporation/extraction kinetics of the potential solid oxide fuel cell (SOFC) cathode material Bi(1-x)Sr(x)FeO(3-delta) with x = 0.5 and 0.8 was studied by electrochemical impedance spectroscopy on geometrically well-defined pore-free thin film electrodes. The oxygen exchange rate was found to be higher than that of La(1-x)Sr(x)FeO(3-delta) and-among cobalt-free perovskites-only surpassed by Ba(1-x)Sr(x)FeO(3-delta) which is however known to be unstable in a SOFC environment.