Significant improvement of the oxygen permeation flux of tubular Ba 0.5Sr0.5Co0.8Fe0.2O 3 - δ membranes covered by a thin La0.6Sr 0.4Ti0.3Fe0.7O3 - δ layer

Jong Pyo Kim, Jung Hoon Park, Edoardo Magnone, Yongtaek Lee

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Abstract

We present a new method to improve the oxygen flux properties and stability of Ba0.5Sr0.5Co0.8Fe0.2O 3 - δ tube membrane using a thin layer of La 0.6Sr0.4Ti0.3Fe0.7O 3 - δ as protective coatings. The first relevant result is that the La0.6Sr0.4Ti0.3Fe0.7O 3 - δ protective layer had an extraordinary positive effect on improving the oxygen permeation flux of the tubular Ba0.5Sr 0.5Co0.8Fe0.2O3 - δ membranes. La0.6Sr0.4Ti0.3Fe0.7O 3 - δ-coated Ba0.5Sr0.5Co 0.8Fe0.2O3 - δ tubular membrane showed the highest oxygen permeability with the flux reaching ~ 3 ml cm-2 min-1 (oxygen purity > 99%) at 950 °C in static atmospheric pressure through a 1.0 mm thick membrane.

Original languageEnglish
Pages (from-to)2168-2170
Number of pages3
JournalMaterials Letters
Volume65
Issue number14
DOIs
StatePublished - 31 Jul 2011

Keywords

  • Ceramics
  • Membrane
  • Oxygen permeation
  • Perovskite
  • Thin films

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