Mixed conducting molybdenum doped BSCF materials

E. V. Shubnikova, O. A. Bragina, A. P. Nemudry

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

This work discusses the effect of partial substitution of cobalt in Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) by Mo (VI) cations on the crystal structure, microstructure and transport properties of doped materials. Ba0.5Sr0.5Co0.8−xMoxFe0.2O3−δ (BSCFMx) samples possess specific microstructure consisting of double perovskite domains distributed in the cubic perovskite matrix that results in the suppression of undesirable «cubic–hexagonal» phase transition at x ≥ 0.02. Doped BSCFMx perovskites demonstrate high oxygen permeability, improved CO2 tolerance, enhanced electrical conductivity and chemical compatibility with Ce0.8Gd0.2O2-δ electrolyte that allows to consider them as promising candidates both for oxygen transport membranes and cathodes for intermediate temperature SOFC.

Original languageEnglish
Pages (from-to)242-250
Number of pages9
JournalJournal of Industrial and Engineering Chemistry
Volume59
DOIs
Publication statusPublished - 25 Mar 2018

Keywords

  • Air separation
  • BSCF
  • Cathode materials
  • Electrical conductivity
  • Hollow fiber membrane
  • Oxygen deficient perovskite
  • Solid oxide fuel cell
  • Thermal expansion
  • THERMAL-STABILITY
  • HIGH-PERFORMANCE
  • IT-SOFC
  • W PEROVSKITES
  • PEROVSKITE-TYPE OXIDES
  • CATHODE
  • OXYGEN PERMEABILITY
  • TEMPERATURE
  • HOLLOW-FIBER MEMBRANES
  • OXIDE FUEL-CELLS

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