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 cm−3. 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 1.86×10−2 S cm−1 at 800 °C for the sample sintered at 1500 °C.
| Original language | English |
|---|---|
| Pages (from-to) | 1265-1271 |
| Number of pages | 7 |
| Journal | Ceramics International |
| Volume | 43 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Jan 2017 |
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Keywords
- A. Sintering
- C. Ionic conductivity
- D. Alkaline earth oxides
- E. Fuel cells
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Process Chemistry and Technology
- Surfaces, Coatings and Films
- Materials Chemistry
Cite this
Ce0.80Sm0.10Ba0.05Er0.05O2-δ multi-doped ceria electrolyte for intermediate temperature solid oxide fuel cells. / Muhammed Ali, S. A.; Anwar, Mustafa; Abdalla, Abdalla M.; Somalu, Mahendra Rao; Muchtar, Andanastuti.
In: Ceramics International, Vol. 43, No. 1, 01.01.2017, p. 1265-1271.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ce0.80Sm0.10Ba0.05Er0.05O2-δ multi-doped ceria electrolyte for intermediate temperature solid oxide fuel cells
AU - Muhammed Ali, S. A.
AU - Anwar, Mustafa
AU - Abdalla, Abdalla M.
AU - Somalu, Mahendra Rao
AU - Muchtar, Andanastuti
PY - 2017/1/1
Y1 - 2017/1/1
N2 - 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 cm−3. 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 1.86×10−2 S cm−1 at 800 °C for the sample sintered at 1500 °C.
AB - 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 cm−3. 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 1.86×10−2 S cm−1 at 800 °C for the sample sintered at 1500 °C.
KW - A. Sintering
KW - C. Ionic conductivity
KW - D. Alkaline earth oxides
KW - E. Fuel cells
UR - http://www.scopus.com/inward/record.url?scp=84995478890&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84995478890&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2016.10.075
DO - 10.1016/j.ceramint.2016.10.075
M3 - Article
VL - 43
SP - 1265
EP - 1271
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
IS - 1
ER -