Journal Article

FZJ-2025-04052

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Towards sustainable interconnects for solid oxide cells: An integrated technical and environmental evaluation of coating methods

Hilger, M.FZJ* ; El Jardali, K. ; Feyzi, V. ; Vakhrameev, D.FZJ* ; Naumenko, D.FZJ* ; Schwaiger, R.FZJ* ; Iribarren, D. ; Lenser, C. (Corresponding author)FZJ* ; Guillon, O.FZJ* ; Menzler, N. H.FZJ*

2025
Elsevier New York, NY [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.jpowsour.2025.238471  doi:10.34734/FZJ-2025-04052

Abstract: This work presents a comprehensive evaluation of three industrially relevant coating processes – atmospheric plasma spraying (APS), wet powder spraying (WPS), and electrophoretic deposition (EPD) – for the application of MnCo1.9Fe0.1O4 (MCF) spinel-based protective layers on solid oxide cell (SOC) interconnects. Using Crofer-type ferritic stainless steels as substrate, the coatings were assessed with respect to their technical performance and environmental impact. Microstructural characterization, topography analysis for relevant interconnect structures, and mid-term exposure tests at 800 °C in air confirm that all three methods can produce uniform, well-adhering, and protective coatings compatible with SOC stack integration. While APS serves as a technologically mature reference, the suspension-based techniques WPS and EPD demonstrate comparable protective functionality after suitable thermal treatments. Furthermore, life cycle assessment reveals significant sustainability benefits for the newer methods – especially EPD – due to lower energy demand and enhanced material efficiency. The results highlight WPS and EPD as promising, environmentally advantageous alternatives for large-scale application of protective interconnect coatings in SOC systems.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IMD-2)
2. Werkstoffstruktur und -eigenschaften (IMD-1)

Research Program(s):

1. 1231 - Electrochemistry for Hydrogen (POF4-123) (POF4-123)
2. NOUVEAU - NOVEL ELECTRODE COATINGS AND INTERCONNECT FOR SUSTAINABLE AND REUSABLE SOEC (101058784) (101058784)
3. SOFC - Solid Oxide Fuel Cell (SOFC-20140602) (SOFC-20140602)

Appears in the scientific report 2025

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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