Journal article
Characterization of Ce0.9Gd0.1O1.95 powders synthesized by spray drying
Ceramic processing, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Microstructures and Interfaces, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark4
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.
| Language: | English |
|---|---|
| Year: | 2009 |
| Pages: | 2959-2963 |
| ISSN: | 18733956 and 02728842 |
| Types: | Journal article |
| DOI: | 10.1016/j.ceramint.2009.04.003 |
A. Powders: Chemical Preparation D. CeO2 E. Electrodes E. Fuel Cells
