TY - JOUR
T1 - Characterization of Ce0.9Gd0.1O1.95 powders synthesized by spray drying
AU - Blennow Tullmar, Peter
AU - Chen, Weiwu
AU - Lundberg, Mats
AU - Menon, Mohan
PY - 2009
Y1 - 2009
N2 - Ce0.9Gd0.1O1.95 powders were synthesized by spray drying and successive calcinations. The phase purity, BET surface area, and particle morphology of as-sprayed and calcined powders were characterized. After calcination above 300 °C, the powders were single phase and showed a BET surface area of 68 m2/g when calcined at 300 °C. The conductivity, in air, of sintered pellets was measured by electrochemical impedance spectroscopy (EIS) and it was found to be comparable with literature values. The activation energy for the total conductivity was around 0.83 eV. The powder calcined at lower temperature showed better sinterability and higher total conductivity due to an increased bulk conductivity.
AB - Ce0.9Gd0.1O1.95 powders were synthesized by spray drying and successive calcinations. The phase purity, BET surface area, and particle morphology of as-sprayed and calcined powders were characterized. After calcination above 300 °C, the powders were single phase and showed a BET surface area of 68 m2/g when calcined at 300 °C. The conductivity, in air, of sintered pellets was measured by electrochemical impedance spectroscopy (EIS) and it was found to be comparable with literature values. The activation energy for the total conductivity was around 0.83 eV. The powder calcined at lower temperature showed better sinterability and higher total conductivity due to an increased bulk conductivity.
KW - Solid Oxide Fuel Cells
KW - Fuel Cells and hydrogen
KW - Brændselsceller og brint
U2 - 10.1016/j.ceramint.2009.04.003
DO - 10.1016/j.ceramint.2009.04.003
M3 - Journal article
SN - 0272-8842
VL - 35
SP - 2959
EP - 2963
JO - Ceramics International
JF - Ceramics International
IS - 7
ER -