In the last decades, stationary solid oxide fuel cell (SOFC) systems have been developed to generate electricity and heat from the energy stored in hydrogen or hydrocarbons with total efficiencies up to 95%. While the mechanical cell support of stationary systems is commonly supplied by thick ceramic cell components (i.e. ASC- and ESC-concepts), mobile systems demand a more robust design. This is ensured by a strong, yet porous metallic substrate which serves as the mechanical backbone of thin-film membrane-electrode assemblies (metal-supported-cell (MSC) concept).
Porous PM Fe-Cr ODS-alloys (trade name: ITM), which can be used as MSC supports, were devel-oped recently. ITM provides mechanical and chemical long-term stability in typical SOFC atmos-pheres at operation temperatures up to 850°C. The substrates support a multi-layer anode-electrolyte-cathode thin-film assembly, constituting a high performance MSC repeat unit. These units are the building blocks for MSC stacks with superior properties for mobile applications.