Phase-inversion tape-casting preparation and significant performance enhancement of Ce0.9Gd0.1O1.95- La0.6Sr0.4Co0.2Fe0.8O3-δ dual-phase asymmetric membrane for oxygen separation

Hua Huang, Shiyang Cheng, Jianfeng Gao, Chusheng Chen, Jianxin Yi

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The dual-phase Ce0.9Gd0.1O1.95–La0.6Sr0.4Co0.2Fe0.8O3−δ asymmetric membrane was prepared via a phase-inversion tape-casting method. The membrane consisted of a thicker porous support layer and a thinner dense layer. When the dense side of the membrane was coated with a La0.6Sr0.4CoO3−δ catalytic activation layer, the oxygen permeation flux was markedly increased by a factor of 4.1–5.6, reaching 0.45 mL cm−2 min−1 at 900 °C. The flux increase can be attributed to enhanced surface oxygen exhange kinetics.
Original languageEnglish
JournalMaterials Letters
Volume137
Pages (from-to)245–248
ISSN0167-577X
DOIs
Publication statusPublished - 2014

Keywords

  • Ceramic composites
  • Functional
  • Oxygen separation
  • Membrane
  • Phase inversion

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