THERMODYNAMIC ANALYSIS ON INTERFACE BETWEEN PEROVSKITE ELECTRODE AND YSZ ELECTROLYTE

被引：89

作者：

YOKOKAWA, H

SAKAI, N

KAWADA, T

DOKIYA, M

机构：

[1] National Chemical Laboratory for Industry, Tsukuba Research Center, Ibaraki

来源：

SOLID STATE IONICS | 1990年 / 40-1卷

关键词：

D O I：

10.1016/0167-2738(90)90366-Y

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：

The thermodynamic analysis has been made to clarify chemical reactions between yttria-stabilized zirconia (YSZ) and lanthanum alkaline earth (Ca, Sr) transition metal perovskites; these can be basically categorized into (1) dissolution of alkaline earth oxide ions into YSZ with or without precipitation of other oxides and (2) formation of lanthanum (alkaline earth) zirconates at the interface. (La, Ca, Sr)MnO3 perovskites were chosen as model materials to examine what phenomena take place between YSZ and electrodes. In particular, a triangle diagram has been constructed to show those composition regions in which selected phenomena (formation of La2Zr2O7 and of SrZrO3 and dissolution of alkaline earth oxide) dominantly occur. The long term stability of interface has been discussed on the basis of the temperature dependence of the extent of these phenomena. © 1990.

引用

页码：398 / 401

页数：4