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Preparation of Ce0.8Gd0.2O1.9 Powder Using CeO2 Powder and Gd Precipitation and Effect of CoO doping on Sintering
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 Title & Authors
Preparation of Ce0.8Gd0.2O1.9 Powder Using CeO2 Powder and Gd Precipitation and Effect of CoO doping on Sintering
Sim, Soo-Man;
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(GDC20) powder was prepared from a mixture of submicron-sized powder and Gd precipitates using ammonium carbonate as a precipitant. The mixture was calcined at for 4 h followed by ball-milling that resulted in the GDC powder with an average particle size of . The powder had a very uniform particle size distribution with particle sizes ranging from to . Sintering of undoped GDC samples did not show a relative density of 99.2% until the temperature was increased to , whereas GDC samples doped with 5 mol% CoO exhibited a significant densification at lower temperature reaching a relative density of 97.6% at and of 98.8% at .
SOFC electrolyte;GDC; powder;CoO doping;Sintering;
 Cited by
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