Impedance of porous Au based electrodes

被引：118

作者：

Jurczakowski, R ^{[1
]}

Hitz, C ^{[1
]}

Lasia, A ^{[1
]}

机构：

[1] Univ Sherbrooke, Dept Chim, Sherbrooke, PQ J1K 2R1, Canada

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2004年 / 572卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

porous electrodes; electrochemical impedance spectroscopy; gold electrodes; surface roughness;

D O I：

10.1016/j.jelechem.2004.01.008

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Several methods of preparation of porous gold electrodes characterized by the surface roughness from 20 to 2.5 x 10(3) were described. These methods involved thermal decomposition, leaching or dissolution of surface amalgam. Electrochemical impedance spectroscopy (EIS) was used to characterize these electrodes. All these materials displayed porous behavior. EIS allowed for determination of the surface roughness, estimation of the surface area in the pores and the external surface area. Porous behavior was verified in two supporting electrolytes of different solution resistivity, namely 1 M H2SO4 and NaNO3. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：355 / 366

页数：12

共 27 条

[1] THE ANALYSIS OF ELECTRODE IMPEDANCES COMPLICATED BY THE PRESENCE OF A CONSTANT PHASE ELEMENT [J].