The stability of hydrogen evolution activity and corrosion behavior of NiCu coatings with long-term electrolysis in alkaline solution

被引：127

作者：

Solmaz, Ramazan ^{[1
]}

Doner, Ali ^{[1
]}

Kardas, Guelfeza ^{[1
]}

机构：

[1] Cukurova Univ, Sci & Letters Fac, Dept Chem, TR-01330 Adana, Turkey

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 05期

关键词：

NiCu coatings; Electrochemical deposition; Electrolysis; Corrosion; Electrocatalysis; Hydrogen evolution reaction; ELECTROCATALYTIC PROPERTIES; MILD-STEEL; ALLOY; ELECTRODES; ENERGY; ADSORPTION; IMPEDANCE; KINETICS; ACID; FUEL;

D O I：

10.1016/j.ijhydene.2009.01.007

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：

In this study, NiCu composite coating was electrochemically deposited on a copper electrode (Cu/NiCu) and tested for hydrogen evolution reaction (HER) in 1 M KOH solution for long-term electrolysis with the help of cathodic current-potential curves and electrochemical impedance spectroscopy (EIS) techniques. The bulk and surface composition of the coating was determined using atomic absorption spectroscopy (AAS) and energy dispersive X-ray (EDX) analysis. The surface morphology was investigated by scanning electron microscopy (SEM). The effect of electrolysis on the corrosion behavior of the Cu/NiCu electrode was also reported. It was found that the NiCu coating had a compact and porous structure with good time stability. The HER activity of the coating was stable over 120 h electrolysis and the HER mechanism was not modified during the operation. The corrosion tests showed that the corrosion resistance of the Cu/NiCu electrode changed when a cathodic current was applied to the electrolysis system. (C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：2089 / 2094

页数：6

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