DEVELOPMENT OF 2ND GENERATION, SUPPORTED ELECTROLYTE, FLAT PLATE SOFC COMPONENTS AT ECN

摘要

ECN has developed an anode supported thin electrolyte flat plate cell manufacturing route using conventional ceramic processing techniques. Tapecasting is used to fabricate the thick NiO-YSZ anode substrates. An anode interface layer ranging between 3 and 10 μm and an 8YSZ electrolyte layer ranging between 3 and 30 μm are applied by means of screen printing. The cathode is currently a conventional composite SLM-YSZ double layer. Lab scale tests on 5 X 5 cm~2 cells gave maximum power densities of 470 mW/cm~2 at 750°C and 610 mW/cm~2 at 800°C, using air as oxidant and humidified hydrogen as fuel (low fuel utilisation). A scaled up cell with a diameter of 12 cm had a stable performance over 500 hrs at 750°C with a maximum power density of 260 mW/cm~2 at 30% fuel utilisation.