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

4 Citations (Scopus)

Abstract

Cobalt-free SrFe0·8Ti0·2O3-δ cathode powders were synthesized through the combustion method. Results of 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 the 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 homogeneous 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 was 121.77 kJ mol−1. This work confirmed the potential of a SrFe0·8Ti0·2O3-δ cathode in the intermediate temperature solid oxide fuel cell.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
Early online date12 Dec 2018
DOIs
Publication statusE-pub ahead of print - 12 Dec 2018

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

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