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Tubular metal supported SOFC technology has successfully been developed over the past years with the aim at domestic CHP systems below 3 kWe. The basic cell structure consists of a metal porous support, a protective barrier layer, an anode and an electrolyte cofired at 1350ºC. Cathode and contacting layers are subsequently sintered at lower temperatures. Latest achievements include average cell performances of 400 mW/cm2 at 0.7 V and 800ºC, over 350 thermal cycles and more than 1500 hours of steady operation. Several stack concepts are currently being tested and BoP components such as fuel processing, power electronics and control system developed in parallel to achieve a successful micro-CHP proof of concept by the end of 2010.

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