Synthesis and characterization of cobalt-free SrFe0.8Ti0.2O3-δ cathode powders synthesized through combustion method for solid oxide fuel cells

Nurul Akidah Baharuddin, Andanastuti Muchtar, Mahendra Rao Somalu, Noor Shieela Kalib, Nor Fatina Raduwan

Research output: Contribution to journalArticle

Abstract

Cobalt-free SrFe0.8Ti0.2O3-δ cathode were synthesized through combustion method. Results of the thermogravimetric and Fourier transform infrared analyses suggested that a perovskite oxide started to form at temperatures above 1100 °C. X-ray diffraction and Rietveld refinement analyses confirmed that the single-phase cubic structure (Pm-3m) of SrFe0.8Ti0.2O3-δ cathode was produced after calcination at 1300 °C. The average sizes of the particles were 1.0827 and 1.4438 μm as revealed by field emission scanning electron microscopy and dynamic light scattering analysis, respectively. In addition, energy dispersive X-ray analysis coupled with mapping revealed the homogenous distribution of elements in the cathode. The thermal expansion coefficient of the SrFe0.8Ti0.2O3-δ cathode is 16.20 × 10−6 K−1. For the electrochemical behavior, the area specific resistance of cathode (0.60–13.57 Ω cm2) was obtained at 600–800 °C and the activation energy is 121.77 kJ mol−1. This work confirmed the potential of SrFe0.8Ti0.2O3-δ cathode in intermediate temperature solid oxide fuel cell.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
DOIs
Publication statusAccepted/In press - 1 Jan 2018

Fingerprint

solid oxide fuel cells
Solid oxide fuel cells (SOFC)
Cobalt
Cathodes
cobalt
cathodes
Powders
synthesis
Rietveld refinement
Energy dispersive X ray analysis
Dynamic light scattering
Field emission
Perovskite
Calcination
roasting
Thermal expansion
field emission
thermal expansion
Fourier transforms
x rays

Keywords

  • Area specific resistance
  • Cobalt-free cathode
  • Particle size
  • Perovskite
  • Solid oxide fuel cell

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

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title = "Synthesis and characterization of cobalt-free SrFe0.8Ti0.2O3-δ cathode powders synthesized through combustion method for solid oxide fuel cells",
abstract = "Cobalt-free SrFe0.8Ti0.2O3-δ cathode were synthesized through combustion method. Results of the thermogravimetric and Fourier transform infrared analyses suggested that a perovskite oxide started to form at temperatures above 1100 °C. X-ray diffraction and Rietveld refinement analyses confirmed that the single-phase cubic structure (Pm-3m) of SrFe0.8Ti0.2O3-δ cathode was produced after calcination at 1300 °C. The average sizes of the particles were 1.0827 and 1.4438 μm as revealed by field emission scanning electron microscopy and dynamic light scattering analysis, respectively. In addition, energy dispersive X-ray analysis coupled with mapping revealed the homogenous distribution of elements in the cathode. The thermal expansion coefficient of the SrFe0.8Ti0.2O3-δ cathode is 16.20 × 10−6 K−1. For the electrochemical behavior, the area specific resistance of cathode (0.60–13.57 Ω cm2) was obtained at 600–800 °C and the activation energy is 121.77 kJ mol−1. This work confirmed the potential of SrFe0.8Ti0.2O3-δ cathode in intermediate temperature solid oxide fuel cell.",
keywords = "Area specific resistance, Cobalt-free cathode, Particle size, Perovskite, Solid oxide fuel cell",
author = "Baharuddin, {Nurul Akidah} and Andanastuti Muchtar and Somalu, {Mahendra Rao} and Kalib, {Noor Shieela} and Raduwan, {Nor Fatina}",
year = "2018",
month = "1",
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doi = "10.1016/j.ijhydene.2018.01.210",
language = "English",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
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TY - JOUR

T1 - Synthesis and characterization of cobalt-free SrFe0.8Ti0.2O3-δ cathode powders synthesized through combustion method for solid oxide fuel cells

AU - Baharuddin, Nurul Akidah

AU - Muchtar, Andanastuti

AU - Somalu, Mahendra Rao

AU - Kalib, Noor Shieela

AU - Raduwan, Nor Fatina

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Cobalt-free SrFe0.8Ti0.2O3-δ cathode were synthesized through combustion method. Results of the thermogravimetric and Fourier transform infrared analyses suggested that a perovskite oxide started to form at temperatures above 1100 °C. X-ray diffraction and Rietveld refinement analyses confirmed that the single-phase cubic structure (Pm-3m) of SrFe0.8Ti0.2O3-δ cathode was produced after calcination at 1300 °C. The average sizes of the particles were 1.0827 and 1.4438 μm as revealed by field emission scanning electron microscopy and dynamic light scattering analysis, respectively. In addition, energy dispersive X-ray analysis coupled with mapping revealed the homogenous distribution of elements in the cathode. The thermal expansion coefficient of the SrFe0.8Ti0.2O3-δ cathode is 16.20 × 10−6 K−1. For the electrochemical behavior, the area specific resistance of cathode (0.60–13.57 Ω cm2) was obtained at 600–800 °C and the activation energy is 121.77 kJ mol−1. This work confirmed the potential of SrFe0.8Ti0.2O3-δ cathode in intermediate temperature solid oxide fuel cell.

AB - Cobalt-free SrFe0.8Ti0.2O3-δ cathode were synthesized through combustion method. Results of the thermogravimetric and Fourier transform infrared analyses suggested that a perovskite oxide started to form at temperatures above 1100 °C. X-ray diffraction and Rietveld refinement analyses confirmed that the single-phase cubic structure (Pm-3m) of SrFe0.8Ti0.2O3-δ cathode was produced after calcination at 1300 °C. The average sizes of the particles were 1.0827 and 1.4438 μm as revealed by field emission scanning electron microscopy and dynamic light scattering analysis, respectively. In addition, energy dispersive X-ray analysis coupled with mapping revealed the homogenous distribution of elements in the cathode. The thermal expansion coefficient of the SrFe0.8Ti0.2O3-δ cathode is 16.20 × 10−6 K−1. For the electrochemical behavior, the area specific resistance of cathode (0.60–13.57 Ω cm2) was obtained at 600–800 °C and the activation energy is 121.77 kJ mol−1. This work confirmed the potential of SrFe0.8Ti0.2O3-δ cathode in intermediate temperature solid oxide fuel cell.

KW - Area specific resistance

KW - Cobalt-free cathode

KW - Particle size

KW - Perovskite

KW - Solid oxide fuel cell

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