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The Influence of Hydrogen Concentration in an Ar–H2 Mixture on the Electrical Properties of Solid Oxide Fuel Cells

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Powder Metallurgy and Metal Ceramics Aims and scope

Fuel cells are today among the most efficient and environmentally friendly devices for the production of electricity. They are developing rapidly and are already in the early stages of commercial implementation. Solid oxide fuel cells (SOFCs) are largely promising as they show the highest efficiency and flexibility (H2, CnHm, CO, etc.) and do not need platinum group catalysts. Much attention is paid to improving the structure of SOFCs to increase their electrical properties. Different research groups commonly study the electrical properties of SOFCs under different conditions depending on the available equipment and the capabilities of their laboratories; this complicates an overall comparison between the electrical properties of fuel cells. In this regard, this research focuses on establishing the dependence of the specific electrical power (P0.7) at 0.7 V voltage for SOFCs on the hydrogen concentration in model fuel (a mixture of hydrogen and inert gas), other experimental conditions being equal. The specific electrical power P0.7 was chosen as one of the most important indicators for SOFC operation in power systems. The experimental dependence of P0.7 on the hydrogen concentration (CH2) in model fuel for different SOFCs was fitted with the least squares method to polynomial, logarithmic, and linear functions and the factor of coincidence (determination factor R2) with the experimental data was calculated. The quadratic and linear fitting functions were found to be most accurate among the functions considered and showed an average relative fitting error of no more than 9 and 12%, respectively. The prospects of the proposed hypothesis are that the fitted dependences of the SOFC electrical indicators can be used not only to predict the electrical properties of SOFCs in different operating conditions but also to facilitate the comparison of their electrical properties.

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Authors and Affiliations

  1. Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kyiv, Ukraine

    N.O. Lysunenko, Y.M. Brodnikovskyi, I.O. Polishko, D.M. Brodnikovskyi & O.D. Vasylyev

  2. National Technical University ‘Igor Sikorsky Kyiv Polytechnic Institute’, Kyiv, Ukraine

    V.M. Mokiichuk

  3. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine

    V.I. Chedryk

Authors
  1. N.O. Lysunenko
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  2. Y.M. Brodnikovskyi
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  3. V.M. Mokiichuk
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  4. I.O. Polishko
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  5. D.M. Brodnikovskyi
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  6. V.I. Chedryk
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  7. O.D. Vasylyev
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Corresponding author

Correspondence to N.O. Lysunenko.

Additional information

Translated from Poroshkova Metallurgiya, Vol. 60, Nos. 5–6 (539), pp. 118–128, 2021.

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Lysunenko, N., Brodnikovskyi, Y., Mokiichuk, V. et al. The Influence of Hydrogen Concentration in an Ar–H2 Mixture on the Electrical Properties of Solid Oxide Fuel Cells. Powder Metall Met Ceram 60, 352–359 (2021). https://doi.org/10.1007/s11106-021-00245-x

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  • DOI: https://doi.org/10.1007/s11106-021-00245-x

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