Development of SOFC Interconnects Based on Industrial Steels with Oxide Coating

Andrey Bushuev, Oleg El’kin, Ivan Tolstobrov, Yulia Chetvertnykh, Mark Bobro, Nailya Saetova and Anton Kuzmin ()
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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

Energies, 2023, vol. 16, issue 3, 1-10

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.

Keywords: solid oxide fuel cell; interconnect; protective coating; electrodeposition; oxide (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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