Protective Coatings for Ferritic Stainless Steel Interconnect Materials in High Temperature Solid Oxide Electrolyser Atmospheres

Jyrki Mikkola, Karine Couturier, Belma Talic, Stefano Frangini, Nathalie Giacometti, Nathalie Pelissier, Bhaskar Reddy Sudireddy and Olivier Thomann
Additional contact information
Jyrki Mikkola: Fuel Cells and Hydrogen Team, VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, 02044 Espoo, Finland
Karine Couturier: CEA (Atomic Energy and Alternative Energies Commission)-LITEN (Innovative Laboratory for New Energies Technologies and Nanomaterials), Université Grenoble Alpes, 38054 Grenoble, France
Belma Talic: Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, 2800 Kongens Lyngby, Denmark
Stefano Frangini: ENEA (Energia Nucleare ed Energie Alternative), CR (Casaccia Centro Ricerche), TERIN-PSU-ABI, 00123 Rome, Italy
Nathalie Giacometti: CEA (Atomic Energy and Alternative Energies Commission)-LITEN (Innovative Laboratory for New Energies Technologies and Nanomaterials), Université Grenoble Alpes, 38054 Grenoble, France
Nathalie Pelissier: CEA (Atomic Energy and Alternative Energies Commission)-LITEN (Innovative Laboratory for New Energies Technologies and Nanomaterials), Université Grenoble Alpes, 38054 Grenoble, France
Bhaskar Reddy Sudireddy: Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, 2800 Kongens Lyngby, Denmark
Olivier Thomann: Fuel Cells and Hydrogen Team, VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, 02044 Espoo, Finland

Energies, 2022, vol. 15, issue 3, 1-24

Abstract: Stainless steel interconnect materials used in solid oxide fuel cells and electrolysers need to be coated to improve oxidation resistance and to mitigate Cr-vaporization. This work aimed to explore the optimal steel/coating combinations suitable for use in reversible solid oxide stacks and evaluated (Co,Mn) 3 O 4 spinel, LaFeO 3 perovskite, Ce/Co and Y-based coatings, on AISI441 and Crofer 22 APU steels. The coatings were evaluated based on measurements of mass gain and oxide scale thickness after exposure at 700 and 800 °C to fuel side (90 vol.% H 2 O/10 vol.% H 2 ) and air/oxygen side (pure O 2 ) atmospheres. In pure O 2 , the most efficient coatings for limiting oxide scale formation and Cr evaporation, compared to the bare steel, were (Co,Mn) 3 O 4 and CeCo on Crofer 22 APU. In 90 vol.% H 2 O/10 vol.% H 2 , the Y-based coating showed the largest improvement in oxidation resistance.

Keywords: fuel cells; solid oxide cells; interconnects; degradation; protective coatings (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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