Fabrication of nano-structured DyxCe(1-x)O(2-x/2) (x=0.15 and 0.2) electrolytes using combined process of spark plasma sintering and conventional sintering

Doped ceria (CeO2) compounds are fluorite-type oxides that show oxide ionic conductivity higher than yttria-stabilized zirconia in oxidizing atmosphere. As a consequence of this, considerable interest has been shown in application of these materials for "low" (500 degrees,- 650 degrees C) temperature operation of solid oxide fuel cells (SOFCs). To improve the conductivity in dysprosium (Dy) doped CeO2, sinterability nanopowders were synthesized via carbonate coprecipitation method Ae dense sintered bodies werejabricated using a combined method ofspark plasma sintering (SPS) and conventional sintering (CS).