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Polarization resistance of platinum electrodes in contact with proton-conducting La0.9Sr0.1 613-1

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Abstract

The Pt-La0.9Sr0.1ScO3 − δ interface was studied by impedance spectroscopy at different temperatures (600–900°C) and partial pressures of oxygen (50 < pO2 < 2.1 × 104 Pa) in the gas phase saturated with H2O vapors at 25°C (pH2O = 3.17 kPa). The polarization resistance of electrodes was calculated taking into account the shunt effect of the hole conductivity of the electrolyte. In the range of temperatures and partial oxygen pressures in the gas phase under study, the mechanism of the electrode reaction at the Pt-La0.9Sr0.1ScO3 − δ interface was shown to be the same.

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Authors and Affiliations

  1. Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia

    E. P. Antonova, D. I. Bronin & A. Yu. Stroeva

Authors
  1. E. P. Antonova
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  2. D. I. Bronin
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  3. A. Yu. Stroeva
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Correspondence to E. P. Antonova.

Additional information

Original Russian Text © E.P. Antonova, D.I. Bronin, A.Yu. Stroeva, 2014, published in Elektrokhimiya, 2014, Vol. 50, No. 7, pp. 687–691.

This publication was prepared based on a lecture delivered at the All-Russian Conference with international participation “Fuel Cells and Power Plants,” Chernogolovka, 2013.

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Antonova, E.P., Bronin, D.I. & Stroeva, A.Y. Polarization resistance of platinum electrodes in contact with proton-conducting La0.9Sr0.1 613-1 . Russ J Electrochem 50, 613–616 (2014). https://doi.org/10.1134/S1023193514070027

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  • DOI: https://doi.org/10.1134/S1023193514070027

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