Title :
Fabrication of Nano-structured DyxCe1-xO2-x/2(x=0.15 and 0.2) Electrolytes Using Combined Process of Spark Plasma Sintering and Conventional Sintering
Author :
Kobayashi, Tomoaki ; Mori, Toshiyuki ; Wang, Yarong ; Ou, Ding Rong ; Ye, Fei ; Kobayashi, Hidehiko ; Drennan, John
Author_Institution :
Nat. Inst. for Mater. Sci.
Abstract :
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" (500deg-650degC) 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. The dense sintered bodies were fabricated using a combined method of spark plasma sintering (SPS) and conventional sintering (CS)
Keywords :
cerium compounds; doping profiles; dysprosium compounds; electrolytes; ionic conductivity; nanotechnology; precipitation; sintering; solid oxide fuel cells; 500 to 650 C; DyxCe1-xO2-0.5x; carbonate coprecipitation method; conventional sintering; doped ceria compounds; doped dysprosium; fluorite-type oxides; nano-structured electrolyte fabrication; oxide ionic conductivity; solid oxide fuel cells; spark plasma sintering; yttria-stabilized zirconia; Atmosphere; Conducting materials; Conductivity; Fabrication; Fuel cells; Nanoparticles; Plasma applications; Plasma temperature; Solids; Sparks; SOFC; SPS; carbonate coprecipitation; doped CeO; oxide ionic conductivity;
Conference_Titel :
Environmentally Conscious Design and Inverse Manufacturing, 2005. Eco Design 2005. Fourth International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
1-4244-0081-3
DOI :
10.1109/ECODIM.2005.1619380
