Thermal expansion behavior of the Ba0.2Sr0.8Co 0.8Fe0.2O3-δ (BSCF) with Sm 0.2Ce0.8O1.9

M. Ahmadrezaei, S. A. Muhammed Ali, Andanastuti Muchtar, C. Y. Tan, Mahendra Rao Somalu

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Nanostructured perovskite oxides of Ba0.2Sr0.8Co 0.8Fe0.2O3-δ (BSCF) were synthesized through the co-precipitation method. The thermal decomposition, phase formation and thermal expansion behavior of BSCF were characterized by thermogravimetric analysis, X-ray diffraction (XRD), and dilatometry, respectively. XRD peaks were indexed to a cubic perovskite structure with a Pm3m (221) space group. All the combined oxides produced the desired perovskite-phase BSCF. The microstructures were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The TEM analysis showed that BSCF powders had uniform nanoparticle sizes and high homogeneity. The cross-sectional SEM micrograph of BSCF exhibited a continuous and no delaminated layer from the electrolyte-supported cell. The thermal expansion coefficient (TEC) of BSCF was 16.2×10-6 K-1 at a temperature range of 600°C to 800°C. Additional experiments showed that the TEC of BSCF is comparable to that of Sm0.2Ce0.8O1.9 (SDC) within the same temperature range. The results demonstrate that BSFC is a promising cathode material for intermediate-temperature solid-oxide fuel cells.

Original languageEnglish
Pages (from-to)46-49
Number of pages4
JournalCeramics - Silikaty
Volume58
Issue number1
Publication statusPublished - 2014

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Perovskite
Thermal expansion
thermal expansion
Oxides
Transmission electron microscopy
X ray diffraction
dilatometry
transmission electron microscopy
Scanning electron microscopy
scanning electron microscopy
oxides
coefficients
solid oxide fuel cells
Coprecipitation
Solid oxide fuel cells (SOFC)
diffraction
Powders
Temperature
Electrolytes
thermal decomposition

Keywords

  • BSCF
  • Cathode materials
  • Nanomaterial perovskites
  • Solid oxide fuel cell
  • Thermal expansion coefficient

ASJC Scopus subject areas

  • Ceramics and Composites
  • Analytical Chemistry
  • Physical and Theoretical Chemistry
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this

Thermal expansion behavior of the Ba0.2Sr0.8Co 0.8Fe0.2O3-δ (BSCF) with Sm 0.2Ce0.8O1.9 . / Ahmadrezaei, M.; Muhammed Ali, S. A.; Muchtar, Andanastuti; Tan, C. Y.; Somalu, Mahendra Rao.

In: Ceramics - Silikaty, Vol. 58, No. 1, 2014, p. 46-49.

Research output: Contribution to journalArticle

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