Cathodes based on (La, Sr)MnO3 modified with PrO2 − x

Yaroslavtsev, I. Yu.; Kuzin, B. L.; Бронин, Д. И.; Vdovin, G. K.; Богданович, Н. М.

doi:10.1134/s1023193509080060

Cited by 15 publications

(4 citation statements)

References 7 publications

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“…One more paper relating to SOFC is that by Yaroslavtsev and coworkers, who investigated lanthanum-strontium manganites modified with PrO 2−x [24]. In the authors' opinion, the presence of praseodymium oxide essentially accelerates the oxygen reaction; however, the electroactive PrO 2−x particles tend to sinter, causing a progressive decrease in the availability of reaction active sites.…”

Section: Electrochemical Applicationsmentioning

confidence: 99%

Physicochemical and Electrical Properties of Praseodymium Oxides

Ferro

2011

International Journal of Electrochemistry

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The industrial research is continuously looking for novelties that could improve the applied processes, increasing the yields, lowering the costs, or improving the performances. In industrial electrochemistry, one more aspect is the stability of electrode materials, which is generally balanced by the catalytic activity: the higher the latter, the lower the former. A compromise has to be found, and an optimization is often the result of new ideas that completely change the way of thinking. Praseodymium-oxide-based cathodes have been proved to be quite interesting devices: the hydrogen evolution reaction is guaranteed by the presence of a noble metal (platinum and/or rhodium), while the stability and poisoning resistance seem to be strongly improved by the presence of lanthanide oxides.

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Section: Electrochemical Applicationsmentioning

confidence: 99%

Physicochemical and Electrical Properties of Praseodymium Oxides

Ferro

2011

International Journal of Electrochemistry

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“…At the same time, the concentration of PrO x crystallites on the surface of electrolyte still fails to reach the percolation threshold. To achieve the percolation threshold and thus expand drastically the three-phase boundary, addition of a considerable activator amount to the electrode is required, for which concentrated (30-40%) praseodymium nitrate solutions are generally used [6][7][8]14].…”

Section: Resultsmentioning

confidence: 99%

“…In high-temperature electrochemistry of oxide solid electrolytes, impregnation of electrodes by solutions of thermally unstable cerium [5,6] and praseodymium salts [6][7][8] with the further thermal treatment has long been used as a method of electrode activation. Here, cerium oxide is used as an activator of electrodes working under reductive conditions, while praseodymium oxide is used as an activator of oxidative conditions.…”

Section: Introductionmentioning

confidence: 99%

Activation of oxygen reaction by praseodymium oxide film on platinum electrode in contact with YSZ electrolyte

Vshivkova

Горелов

2016

Russ J Electrochem

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The method of impedancemetry is used to study electrochemical activity of platinum electrodes in contact with the solid electrolyte of YSZ (ZrO 2 +10 mol % Y 2 O 3 ). Electrodes are activated by small additives of pradeodymium oxide PrO x (0.1-0.3 mg/cm 2 ) by their impregnation by praseodymium nitrate solution with the further thermal treatment at 850°C and are studied in the cases when PrO x forms a film on the electrolyte and when no activator film is formed. The effect of the number of electrode activations on the electrochemical activity of platinum electrodes is studied.

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“…Electrochemical characterization was performed on the 0.8-mm-thick disk-shaped electrolyte samples with Pt symmetric electrodes (S = 0.78 cm 2 and 30 mg/cm 2 ), which were painted and sintered on both sides of the disks at 1000°C, 1 h and activated with praseodymium nitrate to lower the polarization resistance [17]. The schema of the experimental set is presented in Fig.…”

Section: The Preparation and Characterization Of Compact Ceramic Samplesmentioning

confidence: 99%