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Development of SOFC Interconnects Based on Industrial Steels with Oxide Coating

Author

Listed:
  • Andrey Bushuev

    (Institute of Chemistry and Ecology, Vyatka State University, 36 Moskovskaya St., 610000 Kirov, Russia)

  • Oleg El’kin

    (Institute of Chemistry and Ecology, Vyatka State University, 36 Moskovskaya St., 610000 Kirov, Russia)

  • Ivan Tolstobrov

    (Institute of Chemistry and Ecology, Vyatka State University, 36 Moskovskaya St., 610000 Kirov, Russia)

  • Yulia Chetvertnykh

    (Institute of Chemistry and Ecology, Vyatka State University, 36 Moskovskaya St., 610000 Kirov, Russia)

  • Mark Bobro

    (Institute of Chemistry and Ecology, Vyatka State University, 36 Moskovskaya St., 610000 Kirov, Russia)

  • Nailya Saetova

    (Institute of Chemistry and Ecology, Vyatka State University, 36 Moskovskaya St., 610000 Kirov, Russia)

  • Anton Kuzmin

    (Institute of Chemistry and Ecology, Vyatka State University, 36 Moskovskaya St., 610000 Kirov, Russia)

Abstract

This work suggests a method for obtaining heat-resistant protective coatings for 08Kh17T stainless steel that can be used as interconnect material for solid oxide fuel cells. The suggested approach is based on the layer-by-layer precipitation of nickel, cobalt, and manganese, followed by heat treatment in a vacuum and oxidizing atmosphere. XRD results show that the coatings consist of a mixture of metal oxides and compounds with a spinel structure. The obtained coatings demonstrate high resistance to high-temperature oxidation for 100 h. The coating with the ratio of the thicknesses of the cobalt and manganese layers of 1.5/0.5 μm obtained by electrodeposition is the most stable. The specific electrical resistance of this coating is 3.50·10 −3 Ω·cm 2 after 100 h of exposure at 850 °C, which meets the requirements for SOFC interconnect materials.

Suggested Citation

  • Andrey Bushuev & Oleg El’kin & Ivan Tolstobrov & Yulia Chetvertnykh & Mark Bobro & Nailya Saetova & Anton Kuzmin, 2023. "Development of SOFC Interconnects Based on Industrial Steels with Oxide Coating," Energies, MDPI, vol. 16(3), pages 1-10, January.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:3:p:1237-:d:1044895
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    References listed on IDEAS

    as
    1. V.A. Eremin & A.A. Solodyankin & S.A. Belyakov & A.V. Khodimchuk & A.S. Farlenkov & D.A. Krainova & N.S. Saetova & A.V. Kuzmin & A.S. Artamonov & R. Steinberger-Wilckens & M.V. Ananyev, 2019. "Formation of Conductive Oxide Scale on 33NK and 47ND Interconnector Alloys for Solid Oxide Fuel Cells," Energies, MDPI, vol. 12(24), pages 1-16, December.
    2. Paolo Piccardo & Roberto Spotorno & Christian Geipel, 2022. "Investigation of a Metallic Interconnect Extracted from an SOFC Stack after 40,000 h of Operation," Energies, MDPI, vol. 15(10), pages 1-16, May.
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