Abstract
A 10 mol%Sc2O3, 1 mol%CeO2 stabilized-ZrO2 (SSZ) powder was successfully prepared using the sol-gel method. Subsequent SSZ electrolyte pellets were prepared by tape casting technique and sintered at 1400 °C, 1450 °C, 1500 °C, 1550 °C and 1600 °C. These were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS). SSZ showed a pure cubic phase after sintering, the grain size of SSZ increased with the increase of sintering temperature. The SSZ sintered at 1550 °C showed the highest ion conductivity. The maximum power densities of Ni-SSZ/SSZ/La0.8Sr0.2MnO3-δ (LSM)-SSZ single cells sintered at 1550 °C were 0.18, 0.36, 0.51 and 0.72 W cm-2 at 650, 700, 750 and 800 °C, respectively. The polarization resistance (Rp) of the single cell attained 0.201 Ω cm2 at 800 °C.
Original language | English |
---|---|
Pages (from-to) | 5523-5529 |
Number of pages | 7 |
Journal | Ceramics international |
Volume | 42 |
Issue number | 4 |
Early online date | 28 Dec 2015 |
DOIs | |
Publication status | Published - Mar 2016 |
Keywords
- 1 mol%CeO stabilized-ZrO
- 10 mol%ScO
- Electrolyte-supported SOFCs
- Ionic conductivity
- Tape casting
ASJC Scopus subject areas
- Ceramics and Composites
- Process Chemistry and Technology
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Materials Chemistry