Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5439196 | Ceramics International | 2017 | 31 Pages |
Abstract
Novel multidoped ceria (Ce0.80Sm0.10Ba0.05Er0.05O2-δ) electrolyte powders were prepared through solid-state reaction at room temperature. Rare-earth and alkaline-earth elements, which include Er, Sm, and Ba, were used as dopants for CeO2 with a total mole ratio of 0.2. Uniaxial die-pressed powder pellets were densified by air-sintering from 1400 °C to 1600 °C for 6 h. The results of X-ray diffraction indicated a pure cubic fluorite crystal structure with a theoretical density of 7.363 g cmâ3. The relative density and grain size of sintered pellets increased with increasing sintering temperature, which was followed by decreased ionic conductivity. Impedance measurements showed that the highest ionic conductivity was 1.86Ã10â2 S cmâ1 at 800 °C for the sample sintered at 1500 °C.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
S.A. Muhammed Ali, Mustafa Anwar, Abdalla M. Abdalla, Mahendra Rao Somalu, Andanastuti Muchtar,