MIXED CONDUCTING YTTRIUM BARIUM COBALT-OXIDE FOR HIGH OXYGEN PERMEATION

被引：27

作者：

BRINKMAN, HW

KRUIDHOF, H

BURGGRAAF, AJ

机构：

[1] Department of Chemical Technology, Laboratory of Inorganic Chemistry, Materials Science and Catalysis, 7500 AE Enschede

来源：

SOLID STATE IONICS | 1994年 / 68卷 / 3-4期

关键词：

D O I：

10.1016/0167-2738(94)90174-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Yttrium-barium-cobalt-oxide (YBC), especially with low Y content, has been prepared. Oxygen permeation in these materials is very high at moderate temperature. The materials Y0.05BaCo0.95O3-delta and Y0.10Ba0.90CoO3-delta consisted of a BaCoO3-delta like main phase and some minor phases. For the Y0.05BaCo0.95O3-delta material these minor phases were not exceeding 10 vol%. Y0.05BaCo0.95O3-delta had the highest oxygen permeation value of 3.9 x 10(-7) mol/cm2 s at 900-degrees-C; the surface exchange reaction may be the rate limiting step here. The material Y0.33Ba0.67CoO3-delta consisted mainly of two unknown cubic phases.

引用

页码：173 / 176

页数：4

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