IMPEDANCE SPECTROSCOPY STUDIES OF ELECTRODE ELECTROLYTE SYSTEMS

被引：7

作者：

VELLE, OJ

NORBY, T

机构：

[1] Center for Materials Research, Department of Chemistry, University of Oslo, N-0371 Oslo 3

来源：

SOLID STATE IONICS | 1992年 / 52卷 / 1-3期

关键词：

D O I：

10.1016/0167-2738(92)90094-6

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：

Impedance spectra have been recorded for three different electrode systems (Pt, Pt/SrCeO3:Yb and Pt/CaTiO3) with ZrO2:8Y2O3 as a common electrolyte. The systems have been investigated as a function of temperature (650-875-degrees-C) and oxygen partial pressure (10(-5)-1 atm). The measured impedance spectra have been deconvoluted by means of an NLLS program and are well described by a Randles type equivalent circuit, in which the electrode resistance is the sum of a charge transfer resistance and a diffusion resistance. The cathodic reaction is apparently limiting in all three systems. In all three systems the presence of a PtOx compound is suggested.

引用

页码：93 / 97

页数：5

共 10 条

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