High temperature stability of porous metal substrates under highly humidified hydrogen conditions for metal supported Solid Oxide Fuel Cells

High temperature stability of porous metal substrates under highly humidified hydrogen conditions for metal supported Solid Oxide Fuel Cells

Porous Crofer Fe22Cr stainless steel supports for tubular Solid Oxide Fuel Cells (SOFC) were developed and tested successfully under hydrogen fuel with 50% humidification at 800°C. Corrosion resistance and stability as a function of operation lifetime, porosity and thermal cycling were studied throu...

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Bibliographic Details
Published in:Solid state ionics Vol. 222-223; pp. 16 - 22
Main Authors: Sarasketa-Zabala, E., Otaegi, L., Rodriguez-Martinez, L.M., Alvarez, M.A., Burgos, N., Castro, F., Villarreal, I.
Format: Journal Article
Language:English
Published: Elsevier B.V 20-08-2012
Subjects:
Crofer
High temperature oxidation
Humidified atmosphere
Hydrogen fuels
Metal support
Metal-supported Solid Oxide Fuel Cells
Microstructure
Oxides
Porosity
Porous metals
Solid oxide fuel cells
Stability
Thermal cycling
Porosity
Metal-supported Solid Oxide Fuel Cells
Metal support
Crofer
Humidified atmosphere
High temperature oxidation
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Summary:Porous Crofer Fe22Cr stainless steel supports for tubular Solid Oxide Fuel Cells (SOFC) were developed and tested successfully under hydrogen fuel with 50% humidification at 800°C. Corrosion resistance and stability as a function of operation lifetime, porosity and thermal cycling were studied through the investigation of oxide growth and microstructure. Oxidation reactions followed subparabolic kinetics and substrates with porosities between 25 and 40% showed long-term stability over 4500h and suitable properties for metal‐supported SOFC technology application. ► Long term stability of porous metal substrates under high temperature and highly humidified hydrogen ► Assessment of viability of porous metal support for high temperature Solid Oxide Fuel Cell applications ► Oxidation kinetics and stability of porous ferritic stainless steels ► Permeability data and structural analysis of oxidized porous metal supports ► Influence of porosity on metal support stability for Solid Oxide Fuel Cell applications
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ISSN:0167-2738
1872-7689
DOI:10.1016/j.ssi.2012.06.014