期刊
SOLID STATE IONICS
卷 177, 期 26-32, 页码 2249-2253出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2006.05.038
关键词
oxygen permeable membrane; mixed conductor; perovskite-type oxide
La0.1Sr0.9Co0.9Fe0.1O3-delta (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 (O-2) (anode) side was more effective to increase the oxygen permeation flux than that at the high P(O-2) (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. (c) 2006 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据