Dynamics of the YSZ-Pt interface

被引：46

作者：

Bay, L

Jacobsen, T

机构：

来源：

SOLID STATE IONICS | 1997年 / 93卷 / 3-4期

关键词：

oxygen electrode; Yttria stabilized zirconia; point electrode; interface structure; impedance;

D O I：

10.1016/S0167-2738(96)00526-7

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：

Yttria stabilized zirconia (YSZ)-Pt point electrodes were examined by linear potential sweep, potential step and impedance measurements at 1000 degrees C in air. Inductive loops and hysteresis phenomena with long relaxation times were found. Atomic force microscopy showed changes of the interface between Pt and YSZ induced by the current passage. These changes involve transport of solid and are slow enough to explain the large time constants. The low frequency capacitance and inductive loop forming an entire circle indicate the presence of gas reservoirs at the YSZ-Pt interface.

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页码：201 / 206

页数：6

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