Electrochemical and microstructural characteristics of nanoperovskite oxides Ba 0.2Sr 0.8Co 0.8Fe 0.2O 3-δ (BSCF) for solid oxide fuel cells

Mojgan Ahmadrezaei, Andanastuti Muchtar, Norhamidi Muhamad, C. Y. Tan, Edy Herianto

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Nanoperovskite oxides, Ba 0.2Sr 0.8Co 0.8Fe 0.2O 3-δ (BSCF), were synthesized via the co-precipitation method using Ba, Sr, Co, and Fe nitrates as precursors. Next, half cells were fabricated by painting BSCF thin film on Sm 0.2Ce 0.8O x (samarium doped ceria, SDC) electrolyte pellets. X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electrochemical impedance spectroscopy (EIS) measurements were carried out on the BSCF powders and pellets obtained after sintering at 900 °C. Investigations revealed that single-phase perovskites with cubic structure was obtained in this study. The impedance spectra for BSCF/SDC/BSCF cells were measured to obtain the interfacial area specific resistances (ASR) at several operating temperatures. The lowest values of ASR were found to be 0.19cm 2, 0.14 cm 2 0.10 cm 2, 0.09 cm 2 and 0.07 cm 2 at operating temperatures of 600 °C, 650 °C, 700 °C, 750 °C and 800 °C, respectively. The highest conductivity was found for cells sintered at 900 °C with an electrical conductivity of 153 S cm -1 in air at operating temperature of 700 °C.

Original languageEnglish
Pages (from-to)439-444
Number of pages6
JournalCeramics International
Volume39
Issue number1
DOIs
Publication statusPublished - Jan 2013

Fingerprint

Solid oxide fuel cells (SOFC)
Samarium
Oxides
Cerium compounds
Painting
Coprecipitation
Electrochemical impedance spectroscopy
Nitrates
Powders
Temperature
Electrolytes
Sintering
Transmission electron microscopy
X ray diffraction
Thin films
Scanning electron microscopy
Air

Keywords

  • C: Electrical conductivity
  • C: Impedance
  • D: Perovskites
  • E: Fuel cells

ASJC Scopus subject areas

  • Ceramics and Composites
  • Process Chemistry and Technology
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

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title = "Electrochemical and microstructural characteristics of nanoperovskite oxides Ba 0.2Sr 0.8Co 0.8Fe 0.2O 3-δ (BSCF) for solid oxide fuel cells",
abstract = "Nanoperovskite oxides, Ba 0.2Sr 0.8Co 0.8Fe 0.2O 3-δ (BSCF), were synthesized via the co-precipitation method using Ba, Sr, Co, and Fe nitrates as precursors. Next, half cells were fabricated by painting BSCF thin film on Sm 0.2Ce 0.8O x (samarium doped ceria, SDC) electrolyte pellets. X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electrochemical impedance spectroscopy (EIS) measurements were carried out on the BSCF powders and pellets obtained after sintering at 900 °C. Investigations revealed that single-phase perovskites with cubic structure was obtained in this study. The impedance spectra for BSCF/SDC/BSCF cells were measured to obtain the interfacial area specific resistances (ASR) at several operating temperatures. The lowest values of ASR were found to be 0.19cm 2, 0.14 cm 2 0.10 cm 2, 0.09 cm 2 and 0.07 cm 2 at operating temperatures of 600 °C, 650 °C, 700 °C, 750 °C and 800 °C, respectively. The highest conductivity was found for cells sintered at 900 °C with an electrical conductivity of 153 S cm -1 in air at operating temperature of 700 °C.",
keywords = "C: Electrical conductivity, C: Impedance, D: Perovskites, E: Fuel cells",
author = "Mojgan Ahmadrezaei and Andanastuti Muchtar and Norhamidi Muhamad and Tan, {C. Y.} and Edy Herianto",
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T1 - Electrochemical and microstructural characteristics of nanoperovskite oxides Ba 0.2Sr 0.8Co 0.8Fe 0.2O 3-δ (BSCF) for solid oxide fuel cells

AU - Ahmadrezaei, Mojgan

AU - Muchtar, Andanastuti

AU - Muhamad, Norhamidi

AU - Tan, C. Y.

AU - Herianto, Edy

PY - 2013/1

Y1 - 2013/1

N2 - Nanoperovskite oxides, Ba 0.2Sr 0.8Co 0.8Fe 0.2O 3-δ (BSCF), were synthesized via the co-precipitation method using Ba, Sr, Co, and Fe nitrates as precursors. Next, half cells were fabricated by painting BSCF thin film on Sm 0.2Ce 0.8O x (samarium doped ceria, SDC) electrolyte pellets. X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electrochemical impedance spectroscopy (EIS) measurements were carried out on the BSCF powders and pellets obtained after sintering at 900 °C. Investigations revealed that single-phase perovskites with cubic structure was obtained in this study. The impedance spectra for BSCF/SDC/BSCF cells were measured to obtain the interfacial area specific resistances (ASR) at several operating temperatures. The lowest values of ASR were found to be 0.19cm 2, 0.14 cm 2 0.10 cm 2, 0.09 cm 2 and 0.07 cm 2 at operating temperatures of 600 °C, 650 °C, 700 °C, 750 °C and 800 °C, respectively. The highest conductivity was found for cells sintered at 900 °C with an electrical conductivity of 153 S cm -1 in air at operating temperature of 700 °C.

AB - Nanoperovskite oxides, Ba 0.2Sr 0.8Co 0.8Fe 0.2O 3-δ (BSCF), were synthesized via the co-precipitation method using Ba, Sr, Co, and Fe nitrates as precursors. Next, half cells were fabricated by painting BSCF thin film on Sm 0.2Ce 0.8O x (samarium doped ceria, SDC) electrolyte pellets. X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electrochemical impedance spectroscopy (EIS) measurements were carried out on the BSCF powders and pellets obtained after sintering at 900 °C. Investigations revealed that single-phase perovskites with cubic structure was obtained in this study. The impedance spectra for BSCF/SDC/BSCF cells were measured to obtain the interfacial area specific resistances (ASR) at several operating temperatures. The lowest values of ASR were found to be 0.19cm 2, 0.14 cm 2 0.10 cm 2, 0.09 cm 2 and 0.07 cm 2 at operating temperatures of 600 °C, 650 °C, 700 °C, 750 °C and 800 °C, respectively. The highest conductivity was found for cells sintered at 900 °C with an electrical conductivity of 153 S cm -1 in air at operating temperature of 700 °C.

KW - C: Electrical conductivity

KW - C: Impedance

KW - D: Perovskites

KW - E: Fuel cells

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