Abstract
Metal-supported solid oxide fuel cells (MSCs) are promising candidates for non-stationary applications like auxiliary power units (APUs) in heavy duty trucks or range extender systems for battery electric vehicles. Due to limited space available for integrating such systems especially in passenger cars, achieving high power density of MSCs is essential. The MSC concept of Plansee, Austria was stepwise optimized by improved processing of the electrodes and tailoring of the interfaces. Variations of cathode composition and sintering conditions were investigated. Using LSC or LSC/GDC cathodes and Ni/GDC anodes with higher electrochemically active volume increased the cell performance significantly. Moreover, reducing the electrolyte to 2 µm resulted in further improvement of the performance. Finally, preliminary results of long-term operation of the Plansee MSC for more than 1.000 h at 700 °C and 300 mA cm-2, as well as post-mortem analyses, are presented.
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