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Research at St Andrews

Spinel-based coatings for metal supported solid oxide fuel cells

Research output: Contribution to journalArticle

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Author(s)

Elena Stefan, Dragos Neagu, Peter Blennow Tullmar, Åsa Helen Persson, Bhaskar R. Sudireddy, David Miller, Ming Chen, John Irvine

School/Research organisations

Abstract

Metal supports and metal supported half cells developed at DTU are used for the study of a solution infiltration approach to form protective coatings on porous metal scaffolds. The metal particles in the anode layer, and sometimes even in the support may undergo oxidation in realistic operating conditions leading to severe cell degradation. Here, a controlled oxidation of the porous metal substrate and infiltration of Mn and/or Ce nitrate solutions are applied for in situ formation of protective coatings. Our approach consists of scavenging the FeCr oxides formed during the controlled oxidation into a continuous and well adhered coating. The effectiveness of coatings is the result of composition and structure, but also of the microstructure and surface characteristics of the metal scaffolds.
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Details

Original languageEnglish
Pages (from-to)232-244
Number of pages13
JournalMaterials Research Bulletin
Volume89
Early online date4 Feb 2017
DOIs
StatePublished - May 2017

    Research areas

  • Coatings, Porous metal supports, Solution infiltration, Spinels

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