Properties of selected materials for IT-SOFC electrolyte

  • MSc Jacek Chmielowiec, Electrotechnical Institute Wroclaw Division of Electrotechnology and Materials Science, Poland
  • Dr Grzegorz Pasciak, Electrotechnical Institute Wroclaw Division of Electrotechnology and Materials Science, Poland
  • Piotr Bujlo, Electrotechnical Institute Wroclaw Division of Electrotechnology and Materials Science, Poland
  • Prof Boleslaw Mazurek, Electrotechnical Institute Wroclaw Division of Electrotechnology and Materials Science, Poland
  • Prof Chan Siew Hwa, National Technological University, Singapore

    • Paper includes description of synthesis and results of the composition research and electrical measurements of ceramic superionic materials (BIMEVOX, GDC, ScSZ) for IT SOFC electrolyte.
    These materials show high ionic conductivity (approx. 0,1 S/cm) at relatively low temperature (650 °C) what enables theirs application as an electrolyte in fuel cells IT-SOFC. Conductivity measurements of these materials were performed with IS (impedance spectroscopy) method whereas structural research were performed using X-ray spectroscopy. Results of a thermodynamic stability investigation of elaborated materials in oxygen-free atmosphere were also compared. Based on investigations the most suitable superionic conductors for fuel cell applications were preliminary selected.