Thermal memory effects at the Pt | YSZ interface

被引：16

作者：

Jacobsen, T ^{[1
]}

Bay, L ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Chem, DK-2800 Lyngby, Denmark

来源：

ELECTROCHIMICA ACTA | 2002年 / 47卷 / 13-14期

关键词：

oxygen electrode; three-phase boundary; SOFC; autocatalysis;

D O I：

10.1016/S0013-4686(02)00094-4

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A current induced activation mechanism in the oxygen reaction on the Pt \ YSZ interface at 1000 degreesC is demonstrated by impedance measurements. It is shown that Pt point electrodes conditioned at high temperature retain their initial reactivity when cooled to 600 degreesC. At this temperature, the relative rate of the activation/deactivation mechanism is reduced considerably and the electrode stability is sufficient for kinetic studies. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：2177 / 2181

页数：5

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