Millicontact impedance spectroscopic analysis in stabilized zirconia and gadolinia-doped ceria

被引：2

作者：

Lee, Jong-Heun ^{[1
]}

Kim, Doo Kang ^{[2
]}

Kim, Doh-Yeon ^{[2
]}

机构：

[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea

[2] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South Korea

来源：

SOLID STATE IONICS | 2008年 / 179卷 / 21-26期

关键词：

Millicontact Impedance Spectroscopy; local impedance; stabilized zirconia; gadolinia-doped ceria; grain-boundary conduction;

D O I：

10.1016/j.ssi.2008.01.030

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 spatially-resolved local impedance can be measured by 'Millicontact Impedance Spectroscopy (MIS)', which involves the use of an array of sub-millimeter-scale electrodes. In stabilized zirconia and gadolinia-doped ceria electrolytes with highly resistive grain-boundaries, MIS could measure the local impedance precisely and revealed the spatially-resolved changes in the grain-interior and grain-boundary resistivity. The validity of this technique was illustrated using the examples such as the design of a new scavenger material and an analysis of the diffusion of the siliceous phase along the grain boundary. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：966 / 970

页数：5

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