SCREEN-PRINTED DENSE YITTRIA-STABILIZED-ZIRCONIA ELECTROLYTES FOR ANODE-SUPPORTED SOLID OXIDE FUEL CELLS

摘要

Further cost reductions are necessary for the commercialization of solid oxide fuel cells (SOFCs). The economically sensible methods of screen-printing and tape casting were used to fabricate green films that were subsequently sintered producing 5 cm × 5 cm planar Yittria-stabilized-Zirconia (YSZ)-based SOFCs. An anode-interlayer was also included in the cell design that increased interfacial bonding between the electrolyte and anode. The SOFCs were characterized using scanning electron microscopy and pressure drop measurements. The YSZ electrolytes were gas-tight and dense. These cells showed a maximum power density of 0.14 W/cm{sup}2 when tested using a methane-water vapor fuel source at 800°C.