LSC cathode prepared by polymeric complexation method for proton-conducting SOFC application

Abdullah Abdul Samat, Mahendra Rao Somalu, Andanastuti Muchtar, Oskar Hasdinor Hassan, Nafisah Osman

Research output: Contribution to journalArticle

10 Citations (Scopus)

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 languageEnglish
Pages (from-to)1-12
Number of pages12
JournalJournal of Sol-Gel Science and Technology
DOIs
Publication statusAccepted/In press - 18 Jan 2016

Fingerprint

Solid oxide fuel cells (SOFC)
Complexation
Protons
Cathodes
cathodes
Powders
Cooling
Heating
conduction
heating
protons
Diffractometers
cooling
Perovskite
Electrolytes
Pyrolysis
diffractometers
Electron microscopes
thermal decomposition
analyzers

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 journalArticle

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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.]",
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AU - Abdul Samat, Abdullah

AU - Somalu, Mahendra Rao

AU - Muchtar, Andanastuti

AU - Hassan, Oskar Hasdinor

AU - Osman, Nafisah

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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.]

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