Rapid Thermal-Cycling Test Using Thick-Film Electrolyte-Supported Solid Oxide Fuel Cells

摘要

Rapid thermal-cycling tests were performed for the thick-film, electrolyte-supported solid oxide fuel cells SOFCs. The sintered yttria-stabilized zirconia YSZ electrolyte film was mounted on a YSZ ring by sintering the two pieces together. With this configuration, it was possible to cycle the cells between 200 and 800°C with heating and cooling rates up to 50°C/min. Using La0.6Sr0.4Co0.2Fe0.8O3 as a cathode and Ni-GDC Gd-doped ceria as a composite anode, the cell with a 50 m thick YSZ electrolyte maintained a high performance, i.e., maximum power density of 510 mW/cm2 at 800°C after thermal cycles. A planar SOFC was highly durable for rapid thermal cycles