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Electrochemical Properties of Composite Cathode Materials Pr1.95La0.05CuO4–Ce0.9Gd0.1O1.95 for Intermediate Temperature Solid Oxide Fuel Cells

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Abstract

The electrochemical properties are studied for composite electrodes Pr1.95La0.05CuO4(PLCO)–xCe0.9Gd0.1O1.95(GDC), where x = 20, 30, 40, and 50 wt % GDC with the aim of finding the composition with the best electrochemical efficiency in the oxygen reduction reaction. Varying the temperature of sintering of the PLCO–xGDC electrode layer to the surface of GDC solid electrolyte shows that the minimum polarization resistance (Rη) is reached at the temperature of 850°C. For the PLCO–xGDC composition containing 40 wt % GDC, in the temperature range of 600–750°C, the maximum electrochemical activity in oxygen reduction reaction is observed as indicated by 10-fold decrease in Rη as compared with single-phase PLCO (from 0.87 (x = 0) to 0.08 Ω cm2 (x = 40) at 700°C in air). According to the data obtained, the PLCO–40GDC composite can be considered as a promising cathode material for intermediate temperature solid oxide fuel cells.

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia

    N. V. Lyskov, M. Z. Galin, N. B. Kostretsova & G. M. Eliseeva

  2. Moscow State University, Faculty of Fundamental Physicochemical Engineering, Leninskie gory, Moscow, 119991, Russia

    N. B. Kostretsova & G. M. Eliseeva

  3. Moscow State University, Faculty of Chemistry, Leninskie gory, 119992, Russia

    L. M. Kolchina & G. N. Mazo

Authors
  1. N. V. Lyskov
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  2. M. Z. Galin
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  3. N. B. Kostretsova
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  4. G. M. Eliseeva
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  5. L. M. Kolchina
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  6. G. N. Mazo
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Correspondence to N. V. Lyskov.

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Original Russian Text © N.V. Lyskov, M.Z. Galin, N.B. Kostretsova, G.M. Eliseeva, L.M. Kolchina, G.N. Mazo, 2018, published in Elektrokhimiya, 2018, Vol. 54, No. 6, pp. 608–614.

Presented at the IV All-Russian Conference “Fuel Cells and Fuel Cell based Power Plants” (with international participation) June 25‒29, 2017, Suzdal, Vladimir region.

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Lyskov, N.V., Galin, M.Z., Kostretsova, N.B. et al. Electrochemical Properties of Composite Cathode Materials Pr1.95La0.05CuO4–Ce0.9Gd0.1O1.95 for Intermediate Temperature Solid Oxide Fuel Cells. Russ J Electrochem 54, 527–532 (2018). https://doi.org/10.1134/S1023193518060137

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  • DOI: https://doi.org/10.1134/S1023193518060137

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