Surface effect on oxygen permeation through dense membrane of mixed-conductive LSCF perovskite-type oxide

H. Kusaba, Y. Shibata, K. Sasaki, Y. Teraoka

研究成果: ジャーナルへの寄稿学術誌査読

81 被引用数 (Scopus)

抄録

La0.1Sr0.9Co0.9Fe0.1O3-δ (LSCF1991) dense disks with different thicknesses and surface areas were prepared to investigate the contribution of surface reactions and bulk diffusion in oxygen permeation phenomena. The bulk diffusion controlled situation became significant with increasing the membrane thickness, and the surface reaction controlled situation prevailed at smaller surface area. The increase in surface area at the low P(O2) (anode) side was more effective to increase the oxygen permeation flux than that at the high P(O2) (cathode) side. The coating of a porous catalyst layer below the optimum thickness was also effective in enhancing the oxygen permeability due to the increase in surface area, but the coating with too thick layer deteriorated the permeability probably due to the increase in the gas diffusion resistance.

本文言語英語
ページ(範囲)2249-2253
ページ数5
ジャーナルSolid State Ionics
177
26-32 SPEC. ISS.
DOI
出版ステータス出版済み - 10月 31 2006

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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