A PROCESS FOR MAKING ANODE-SUPPORTED PLANAR SOLID OXIDE FUEL CELL

摘要

This invention provides a novel process for the fabrication of anode-supported single cell of solid oxide fuel cell (SOFC) in planar configuration that is based on development of porous anode supported half cell consisting of a thin and gas-tight zirconia, more specifically, 8 mole% yttria stabilized zirconia (YSZ) electrolyte layer over porous nickel oxide-8 mole% yttria stabilized zirconia (NiO-YSZ) anode substrate of dimension up to 5 cm x 5 cm x 1.5 mm for square geometry or up to 5 cm diameter and 1.5 mm thickness for circular geometry followed by development of 40 to 60um of a porous strontium doped lanthanum manganite (LSM) cathode layer over the YSZ electrolyte layer to form the single cell. Using the cells thus fabricated a current density as high as l.OA/cm2 can be achieved at an operating temperature of 800°C under a cell voltage of 0.7 V.