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Enhanced ionic conductivity of co-doped ceria solid solutions and applications in IT-SOFCs

Authors
Journal
Ceramics International
0272-8842
Publisher
Elsevier
Volume
40
Issue
7
Identifiers
DOI: 10.1016/j.ceramint.2014.03.086
Keywords
  • B. Ceo2
  • C. Impedance Spectroscopy
  • C. Ionic Conductivity
  • E. Fuel Cells
Disciplines
  • Earth Science
  • Physics

Abstract

Abstract Co-doping effect of Sm3+ and Ca2+ ions in ceria has been studied using the microwave assisted synthesis (MAS) technique. Thermal response of the prepared compositions was studied using differential thermal and thermo-gravimetric techniques (DTA/TG). Structural studies were performed using X-ray diffraction (XRD) and fourier transform infrared spectroscopy (FT-IR). The impedance analyses were performed over a wide range of temperatures (200–500°C) and frequency (100Hz to 1MHz). The conductivity data show that 10% doping of both Sm3+ and Ca2+ in ceria provides a significant rise in the conductivity value of pure ceria.

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