Preparation and Characterization of Porous La0.6Sr0.4Co0.2Fe0.8O3-δ Ceramics

Abstract

Abstract: Mixed ionic electronic conductor La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ in the porous form can be used as cathodes for solid oxide fuel cells and
supports for thin oxygen separation membranes. La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ porous ceramics were prepared by solid state reaction. The porosity and
pore size were investigated as a function of sintering temperature, molding pressure and amount of organic additive. The experimental results show
that with increasing porosity, its nitrogen permeability increases, but its electrical conductivity decreases as described by σ=σ₀·(1-P)^3.1.

Key words: porous ceramics, mixed conductor, oxygen permeation membrane, SOFC

CLC Number:

TQ174

LIU Wei,ZHANG Zhan-Ping,XIA Chang-Rong,XIE Jin-Qiao,CHEN Chu-Sheng. Preparation and Characterization of Porous La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ Ceramics[J]. Journal of Inorganic Materials.

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Preparation and Characterization of Porous La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ Ceramics

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