| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1488333 | Materials Research Bulletin | 2014 | 4 Pages |
•Effect of Al doping on electrical and structural properties was investigated.•According to the contents of Al, the samples show each electrical property.•When Al is 0.4, the sample shows highest electrical properties.
The effects of various contents of alumina co-doping on a ceria-based electrolyte were investigated. All samples were sintered at 1500 °C for 10 h. The X-ray diffraction (XRD) patterns showed a fluorite cubic structure. To investigate the surfaces of the Ce0.8(Sm0.5−xY0.5Alx)0.2O2−δ (CSYA) ceramics by scanning electron microscopy (SEM), the electrical properties of the CSYA ceramics were measured by AC impedance. The optimal values of ionic conductivity and activation energy were reached at x = 0.4 measured at 600 °C. This result indicated that the alumina co-doping improved the electrical and microstructural properties of the ceria-based electrolyte.
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