SOFC DEVELOPMENT AT SIEMENS

摘要

Based on the results of the 10 kW stack, operated for more than 1400 hours in June 1995 the development of components and system was continued. The size of cells was increased to 100 × 100 mm~2 and integrated in one metal bipolar plate using the multiple cell array design. This leads to an electrode area of more than 700 cm~2. Improvement of the cathodes let to current densities of 0.8 A/cm~2 at 0.7 V, using hydrogen with 50 % water and air. As important development goal a 20 kW test facility was designed and constructed. It was set into operation in September 1996, delivering in a first test 7.2 kW with hydrogen/air. Based on this concept, a 100 kW plant is being designed.