- Tytuł:
- Characterization of Nd and Sm Co-doped CeO₂-based systems
- Autorzy:
-
Arabacı, A.
Der, M.
Öksüzömer, M.
Altınçekiç, T. - Powiązania:
- https://bibliotekanauki.pl/articles/1055172.pdf
- Data publikacji:
- 2017-01
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
- 88.30.pn
- Opis:
- Nd_{0.20}Sm_{x}Ce_{0.8-x}O_{1.9-x/2} (x=0, 0.05, 0.10, 0.15, 0.20) rare-earth-co-doped ceria electrolytes were synthesized by polyol process. Acetate compounds of cerium and dopants (Nd, Sm) were used as starting materials and triethylene glycol was used as a solvent. Structural and ionic conductivity properties of the electrolyte systems were determined by applying characterization techniques such as X-ray diffraction, the Fourier transform infrared spectroscopy, scanning electron microscope, and electrochemical impedance spectroscopy. The results of X-ray diffraction indicated that a single-phase fluorite structure formed at the relatively low calcination temperature of 600°C. So, the samples were calcined at 600°C for 4 h and then sintered at 1400°C for 6 h to obtain dense ceramics (between 85 and 90%). The two-probe ac impedance spectroscopy was used to study the total ionic conductivity of doped and co-doped ceria samples. The results of the impedance spectroscopy indicate that the Nd_{0.20}Sm_{0.05}Ce_{0.75}O_{1.875} composition exhibited highest ionic conductivity value, 3.60×10¯² S cm¯¹ at 800°C.
- Źródło:
-
Acta Physica Polonica A; 2017, 131, 1; 78-81
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł