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Статья
2017

Films of certain oxides of rare-earth elements as the activators of platinum electrode on ZrO2 + 10 mol % Y2O3 electrolyte


A. I. Kovrova A. I. Kovrova , V. P. Gorelov V. P. Gorelov
Российский электрохимический журнал
https://doi.org/10.1134/S1023193517050111
Abstract / Full Text

The characteristics of porous Pt/YSZ (ZrO2 + 10 mol % Y2O3) electrodes activated with small amounts of either oxides of rare-earth elements (REE) of the cerium subgroup (CeO2, PrO x , TbO x ) or a mixed oxide with the Сe2Tb4O11 composition by the procedure of impregnating the electrodes with ethanol solutions of REE nitrates and subsequent heating at 850°С are studied by the impedance method. The studies are carried out for those cases where the REE oxides after thermal treatment form a film on the electrolyte and also where no activator film is formed. The characteristics of films and activated electrodes are compared. Film-activated Pt/YSZ electrodes are discussed within the framework of the model of compact oxide electrodes.

Author information
  • Institute of High-Temperature Electrochemistry, Ural Division, Russian Academy of Sciences, Yekaterinburg, 620137, Russia

    A. I. Kovrova & V. P. Gorelov

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