OXYGEN DIFFUSION AND SOLUBILITY STUDIES IN AG AND PT USING AC IMPEDANCE SPECTROSCOPY

被引：32

作者：

MOGHADAM, FK

STEVENSON, DA

机构：

[1] Stanford Univ, Stanford, CA, USA, Stanford Univ, Stanford, CA, USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1986年 / 133卷 / 07期

关键词：

ELECTROLYTES - PLATINUM AND ALLOYS - Spectroscopic Analysis - SILVER AND ALLOYS - Spectroscopic Analysis - SPECTROSCOPY - Applications;

D O I：

10.1149/1.2108864

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The ac impedance spectroscopy technique is used to study the oxygen solubility and diffusivity in solid platinum and silver. The results are compared with previous results and are discussed in relation to the use of these metals as electrodes for solid oxide electrolytes. Bulk diffusion is the rate limiting step for silver, whereas surface diffusion is the oxygen rate limiting mechanism for Pt; Pt is essentially impermeable to oxygen, even at elevated temperatures.

引用

页码：1329 / 1332

页数：4

共 6 条

[1] DIFFUSION-LIMITED CHARGE TRANSPORT AT PLATINUM-ELECTRODES ON DOPED CEO2 [J].