Publication | Closed Access
Fast oxygen exchange kinetics of pore-free Bi1−xSrxFeO3−δ thin films
68
Citations
37
References
2011
Year
Materials ScienceOxide HeterostructuresOxygen Reduction ReactionEngineeringBattery Electrode MaterialsOxide ElectronicsAdvanced Electrode MaterialSurface ScienceOxygen Exchange RateBatteriesChemistryThin FilmsElectrochemical ProcessElectrochemical CellFunctional MaterialsElectrochemistryElectrochemical Impedance SpectroscopyOxygen Incorporation/extraction Kinetics
The oxygen incorporation/extraction kinetics of the potential solid oxide fuel cell (SOFC) cathode material Bi(1-x)Sr(x)FeO(3-δ) 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-δ) and-among cobalt-free perovskites-only surpassed by Ba(1-x)Sr(x)FeO(3-δ) which is however known to be unstable in a SOFC environment.
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