Abstract
Abstract: Single-phase, submicron La0.6Sr0.4CoO3−δ (LSC) powder was prepared via a polymeric complexation method at various heating/cooling rates. The optimum powder slurry was used to fabricate LSC/BCZY64/LSC half-cells using BaCe0.54Zr0.36Y0.1O2.95 (BCZY64) as the electrolyte material. The produced powder was characterized by thermal gravimetric analyzer (TGA), X-ray diffractometer (XRD) and scanning electron microscope (SEM) and the half-cell, by electrochemical impedance spectroscopy. TGA results showed that the thermal decomposition temperature (Ttd) increased as the heating rate increased. The minimum and maximum Ttd was observed at 600 °C (2 °C min−1) and 750 °C (15 °C min−1), respectively. The XRD results confirmed that a single perovskite phase of LSC formed at heating/cooling rates of 2, 5 and 10 °C min−1 at calcination temperatures of 800, 900 and 1000 °C, respectively. A single perovskite phase of LSC was not observed at a heating/cooling rate of 15 °C min−1. The smallest particle size (130–260 nm) was obtained at 800 °C with a heating/cooling rate of 5 °C min−1, as shown in the SEM micrographs. The area specific resistance of the half-cell was 2.96, 0.97, 0.48 and 0.19 Ω cm2 at 500, 600, 700 and 800 °C, respectively. This result indicates that the prepared LSC cathode has the potential to be used with the BCZY64 electrolyte for an intermediate temperature proton-conducting SOFC. Graphical Abstract: [Figure not available: see fulltext.]
| Original language | English |
|---|---|
| Pages (from-to) | 1-12 |
| Number of pages | 12 |
| Journal | Journal of Sol-Gel Science and Technology |
| DOIs | |
| Publication status | Accepted/In press - 18 Jan 2016 |
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Keywords
- Cathode
- Heating/cooling rate
- LSC
- Polymeric complexation method
- SOFC
ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
- Biomaterials
- Ceramics and Composites
- Electronic, Optical and Magnetic Materials
- Materials Chemistry
Cite this
LSC cathode prepared by polymeric complexation method for proton-conducting SOFC application. / Abdul Samat, Abdullah; Somalu, Mahendra Rao; Muchtar, Andanastuti; Hassan, Oskar Hasdinor; Osman, Nafisah.
In: Journal of Sol-Gel Science and Technology, 18.01.2016, p. 1-12.Research output: Contribution to journal › Article
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TY - JOUR
T1 - LSC cathode prepared by polymeric complexation method for proton-conducting SOFC application
AU - Abdul Samat, Abdullah
AU - Somalu, Mahendra Rao
AU - Muchtar, Andanastuti
AU - Hassan, Oskar Hasdinor
AU - Osman, Nafisah
PY - 2016/1/18
Y1 - 2016/1/18
N2 - Abstract: Single-phase, submicron La0.6Sr0.4CoO3−δ (LSC) powder was prepared via a polymeric complexation method at various heating/cooling rates. The optimum powder slurry was used to fabricate LSC/BCZY64/LSC half-cells using BaCe0.54Zr0.36Y0.1O2.95 (BCZY64) as the electrolyte material. The produced powder was characterized by thermal gravimetric analyzer (TGA), X-ray diffractometer (XRD) and scanning electron microscope (SEM) and the half-cell, by electrochemical impedance spectroscopy. TGA results showed that the thermal decomposition temperature (Ttd) increased as the heating rate increased. The minimum and maximum Ttd was observed at 600 °C (2 °C min−1) and 750 °C (15 °C min−1), respectively. The XRD results confirmed that a single perovskite phase of LSC formed at heating/cooling rates of 2, 5 and 10 °C min−1 at calcination temperatures of 800, 900 and 1000 °C, respectively. A single perovskite phase of LSC was not observed at a heating/cooling rate of 15 °C min−1. The smallest particle size (130–260 nm) was obtained at 800 °C with a heating/cooling rate of 5 °C min−1, as shown in the SEM micrographs. The area specific resistance of the half-cell was 2.96, 0.97, 0.48 and 0.19 Ω cm2 at 500, 600, 700 and 800 °C, respectively. This result indicates that the prepared LSC cathode has the potential to be used with the BCZY64 electrolyte for an intermediate temperature proton-conducting SOFC. Graphical Abstract: [Figure not available: see fulltext.]
AB - Abstract: Single-phase, submicron La0.6Sr0.4CoO3−δ (LSC) powder was prepared via a polymeric complexation method at various heating/cooling rates. The optimum powder slurry was used to fabricate LSC/BCZY64/LSC half-cells using BaCe0.54Zr0.36Y0.1O2.95 (BCZY64) as the electrolyte material. The produced powder was characterized by thermal gravimetric analyzer (TGA), X-ray diffractometer (XRD) and scanning electron microscope (SEM) and the half-cell, by electrochemical impedance spectroscopy. TGA results showed that the thermal decomposition temperature (Ttd) increased as the heating rate increased. The minimum and maximum Ttd was observed at 600 °C (2 °C min−1) and 750 °C (15 °C min−1), respectively. The XRD results confirmed that a single perovskite phase of LSC formed at heating/cooling rates of 2, 5 and 10 °C min−1 at calcination temperatures of 800, 900 and 1000 °C, respectively. A single perovskite phase of LSC was not observed at a heating/cooling rate of 15 °C min−1. The smallest particle size (130–260 nm) was obtained at 800 °C with a heating/cooling rate of 5 °C min−1, as shown in the SEM micrographs. The area specific resistance of the half-cell was 2.96, 0.97, 0.48 and 0.19 Ω cm2 at 500, 600, 700 and 800 °C, respectively. This result indicates that the prepared LSC cathode has the potential to be used with the BCZY64 electrolyte for an intermediate temperature proton-conducting SOFC. Graphical Abstract: [Figure not available: see fulltext.]
KW - Cathode
KW - Heating/cooling rate
KW - LSC
KW - Polymeric complexation method
KW - SOFC
UR - http://www.scopus.com/inward/record.url?scp=84954468498&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84954468498&partnerID=8YFLogxK
U2 - 10.1007/s10971-015-3945-4
DO - 10.1007/s10971-015-3945-4
M3 - Article
AN - SCOPUS:84954468498
SP - 1
EP - 12
JO - Journal of Sol-Gel Science and Technology
JF - Journal of Sol-Gel Science and Technology
SN - 0928-0707
ER -