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Synthesis and properties of fuel cell anodes based on (La0.5 + x Sr0.5 − x )1 − y Mn0.5Ti0.5O3 − δ (x = 0–0.25, y = 0–0.03)

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Abstract

Results are presented of studying electrochemical properties of perovskite-like solid solutions (La0.5 + x Sr0.5 − x )1 − y Mn0.5Ti0.5O3 − δ (x = 0–0.25, y = 0–0.03) synthesized using the citrate technique and studied as oxide anodic materials for solid oxide fuel cells (SOFC). X-ray diffraction (XRD) analysis is used to establish that the materials are stable in a wide range of oxygen chemical potential, stable in the presence of 5 ppm H2S in the range of intermediate temperatures, and also chemically compatible with the solid electrolyte of La0.8Sr0.2Ga0.8Mg0.15Co0.05O3 − δ (LSGMC). It is shown that transition to a reducing atmosphere results in a decrease in electron conductivity that produced a significant effect on the electrochemical activity of porous electrodes. Model cells of planar SOFC on a supporting solid-electrolyte membrane (LSGMC) with anodes based on (La0.6Sr0.4)0.97Mn0.5Ti0.5O3 − δ and (La0.75Sr0.25)0.97Mn0.5Ti0.5O3 − δ and a cathode of Sm0.5Sr0.5CoO3 − δ are manufactured and tested using the voltammetry technique.

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Authors and Affiliations

  1. Institute of Solid State Physics, ul. Akad. Osip’yana 2, Chernogolovka, Moscow Region, 142432, Russia

    A. I. Ivanov, D. A. Agarkov, I. N. Burmistrov, E. A. Kudrenko, S. I. Bredikhin & V. V. Kharton

  2. Department of Materials and Ceramic Engineering, CICECO, University of Aveiro, Aveiro, Portugal

    V. V. Kharton

Authors
  1. A. I. Ivanov
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  2. D. A. Agarkov
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  3. I. N. Burmistrov
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  4. E. A. Kudrenko
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  5. S. I. Bredikhin
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  6. V. V. Kharton
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Correspondence to A. I. Ivanov.

Additional information

Original Russian Text © A.I. Ivanov, D.A. Agarkov, I.N. Burmistrov, E.A. Kudrenko, S.I. Bredikhin, V.V. Kharton, 2014, published in Elektrokhimiya, 2014, Vol. 50, No. 8, pp. 814–820.

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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Ivanov, A.I., Agarkov, D.A., Burmistrov, I.N. et al. Synthesis and properties of fuel cell anodes based on (La0.5 + x Sr0.5 − x )1 − y Mn0.5Ti0.5O3 − δ (x = 0–0.25, y = 0–0.03). Russ J Electrochem 50, 730–736 (2014). https://doi.org/10.1134/S1023193514080047

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  • DOI: https://doi.org/10.1134/S1023193514080047

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