Surface modification and characterization of perovskite-type mixed ionic-electronic conductors

被引：1

作者：

Lee, S ^{[1
]}

Shin, TH ^{[1
]}

Lee, KS ^{[1
]}

Han, IS ^{[1
]}

Seo, DW ^{[1
]}

Hong, KS ^{[1
]}

Woo, SK ^{[1
]}

机构：

[1] KIER, Energy Mat Res Ctr, Taejon, South Korea

来源：

DESIGNING, PROCESSING AND PROPERTIES OF ADVANCED ENGINEERING MATERIALS, PTS 1 AND 2 | 2004年 / 449-4卷

关键词：

surface modification; perovskite; LaSrGaFeO3; LaSrCoFeO3; LaSrCoO3;

D O I：

10.4028/www.scientific.net/MSF.449-452.1297

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Surface modification effects have been investigated for perovskite-type mixed ionic-electronic conductors. As the mixed conducting oxides show both ionic and electronic conductivity, these can be applied as oxygen permeable membranes. We have coated surfaces of the perovskite-type mixed conductors, LaSrCoFeO3 and LaSrGaFeO3, with LaSrCoO3 and investigated the effects on oxygen permeability. Enhanced oxygen permeability was achieved when the LaSrGaFeO3 membrane was surface-modified with LaSrCoO3. However, there was no effect on oxygen permeability of LaSrCoFeO3 even when the surface of which was modified. The morphological factors related with electrochemical reactions have also been discussed.

引用

页码：1297 / 1300

页数：4

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