Gadolinium (10%)-doped ceria was successfully synthesized by using an urea-based co-precipitation method (UBHP). A single fluorite phase was obtained after a low temperature (400 C) calcination treatment. The resulting powders showed grains of nanometric size with some agglomerations and an overall good sinterability. Pellets were sintered at 1300 and 1500 C for 3 h. The ionic conductivity was measured by electrochemical impedance spectroscopy measurements and a correlation between electrical properties and microstructure was revealed. The promising conductivity values showed that the synthesized powders are suitable for intermediate temperature solid oxide fuel cells (IT-SOFCs) applications.
Accardo, G., . Spiridigliozzi, L., Cioffi, R., Ferone, C., DI BARTOLOMEO, E., Pil Yoon, S., et al. (2017). Gadolinium-doped ceria nanopowders synthesized by urea-based homogeneous co-precipitation (UBHP). MATERIALS CHEMISTRY AND PHYSICS, 187, 149-155 [10.1016/j.matchemphys.2016.11.060].
Gadolinium-doped ceria nanopowders synthesized by urea-based homogeneous co-precipitation (UBHP)
DI BARTOLOMEO, ELISABETTA;
2017-01-01
Abstract
Gadolinium (10%)-doped ceria was successfully synthesized by using an urea-based co-precipitation method (UBHP). A single fluorite phase was obtained after a low temperature (400 C) calcination treatment. The resulting powders showed grains of nanometric size with some agglomerations and an overall good sinterability. Pellets were sintered at 1300 and 1500 C for 3 h. The ionic conductivity was measured by electrochemical impedance spectroscopy measurements and a correlation between electrical properties and microstructure was revealed. The promising conductivity values showed that the synthesized powders are suitable for intermediate temperature solid oxide fuel cells (IT-SOFCs) applications.| File | Dimensione | Formato | |
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