Hostname: page-component-8448b6f56d-dnltx Total loading time: 0 Render date: 2024-04-19T04:56:28.858Z Has data issue: false hasContentIssue false
  • English
  • Français

Mixed Conductivity and Oxygen Permeability of (BaxSr1-x)0.98Fe1-yMyO3-&[delta] ( x = 0.1-0.3, y = 0.1-0.4 and M = Ga, Al )

Published online by Cambridge University Press:  26 February 2011

Kang Chun Yong ,
Hajime Kusaba ,
Hisahiro Einaga  and
Yasutake Teraoka
Kang Chun Yong
Affiliation:
mirraju@mm.kyushu-u.ac.jp, Kyushu-univ, Department of Molecular and Material science, Kasuga kouenn6-1, Kasuga, 816-8580, Japan, +81-92-583-7527, +81-92-573-0342
Hajime Kusaba
Affiliation:
Kusaba@mm.kyushu-u.ac.jp, Kyushu Univ., Department of Molecular and Material Science, Faculty of Engineering Sciences, Kasugakouenn 6-1, Kasuga, 816-8580, Japan
Hisahiro Einaga
Affiliation:
einaga@mm.kyushu-u.ac.jp, Kyushu Univ., Department of Molecular and Material Science, Faculty of Engineering Sciences, Kasugakouenn 6-1, Kasuga, 816-8580, Japan
Yasutake Teraoka
Affiliation:
teraoka@mm.kyushu.ac.jp, Kyushu Univ., Department of Molecular and Material Science, Faculty of Engineering Sciences, Kasugakouenn 6-1, Kasuga, 816-8580, Japan
Get access

Abstract

Substitution effects of Ga and Al for Fe in (BaxSr1-x)0.98FeO3-δ were studied with respect to crystal structure, conductivity and oxygen permeability. The solubility limits of Ga and Al in (BaxSr1-x)0.98Fe1-yMyO3-δ (M=Ga, Al) were between 20 and 30 mol%. The substitution of Ga and Al caused decreases in electronic and oxide ionic conductivities (mixed conductivities) but the enhancement of the reduction tolerance. Sintered membranes of the Ga- and Al-substituted oxides showed oxygen permeability under the He/air oxygen partial pressure gradient and were stable under the condition of methane partial oxidation at 900 °C.

Keywords

ionic conductorelectrical propertiesGa
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 972: Symposium AA – Solid-State Ionics—2006 , 2006 , 0972-AA02-05
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Bouwmeester, H.J.M. and Burggraaf, A.J., in Fundamentals of Inorganic Membrane Science and Technology, Burggraaf, A.J. and Cot, L., Editors, p. 435, Elsevier, Amsterdam (1996).Google Scholar
2 Calès, B. and Baumard, J.F., Electrical Properties of The Ternary Solid Solution (ZrO2 1-x-CeO2 x)0.9-(Y2O3) 0.1 (0.1≤x≤0.3). Rev. Int. Hautes Tempér. Réfract., 17 (1980) 137–147.Google Scholar
3 Calès, B. and Baumard, J.F., Mixed Conduction and Defect Structure of ZrO2-CeO2-Y2O3 Solid Solution. J. Electrochem. Soc., 131 (1984) 2407–2413.Google Scholar
4 Teraoka, Y., Zang, H.M., Okamoto, K., Yamazoe, N., Mixed Ionic-Electronic Conductivity of La1-xSrxCo1-yFeyO3-δ Perovskite-type Oxides, Mat. Res. Bull., 23 (1988) 51–58.Google Scholar
5 Day, R. A. Jr nad Undrewood, A. L., Quantitative Analysis 4th Ed. Printed in Japan, Baihuukann, chapter 11, 263–270.Google Scholar
6 Teraoka, Y., Nanri, S., Moriguchi, I., Kagawa, S., Shimanoe, K., Yamazoe, N., Synthesis of Manganite Perovskites by Reverse Homogeneous Precipitation Method in the Presence of Alkylammonium Cations, Chem. Lett., (2000) 1202.Google Scholar