Cathodic hydrogen evolution on molybdenum in NaOH solutions

被引：32

作者：

Badawy, W. A. ^{[1
]}

Feky, H. E. ^{[2
]}

Helal, N. H. ^{[2
]}

Mohammed, H. H. ^{[2
]}

机构：

[1] Cairo Univ, Fac Sci, Dept Chem, Giza 12613, Egypt

[2] Fayoum Univ, Fac Sci, Dept Chem, Al Fayyum, Egypt

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2013年 / 38卷 / 23期

关键词：

Molybdenum; Electrochemical techniques; Hydrogen evolution; Impedance measurements; Sodium hydroxide; ELECTROCHEMICAL-BEHAVIOR; ALKALINE-SOLUTION; AQUEOUS-SOLUTIONS; NICKEL CONTENT; AC-IMPEDANCE; ALLOYS; PASSIVATION; CORROSION; ELECTRODE; KINETICS;

D O I：

10.1016/j.ijhydene.2013.05.098

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：

The general electrochemical behavior of molybdenum was investigated in sodium hydroxide solutions of different concentrations. The investigations were concentrated on the hydrogen evolution reaction on the metal surface. The effect of alkali concentration, cathodic potential and temperature on the rate of hydrogen evolution was evaluated. The results were compared with those obtained on copper or platinum metals. Different electrochemical techniques were used. Impedance measurements under open circuit conditions and under cathodic polarization were carried out. The experimental impedance data were fitted to theoretical data according to a proposed model for the electrode/electrolyte interface. The results have shown that molybdenum can be considered a good candidate for the cathodic hydrogen on a large scale and for long use. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：9625 / 9632

页数：8

共 35 条

[1] Inhibition of corrosion of Al 6061, aluminum, and an aluminum-copper alloy in chloride-free aqueous media: Part 2 - Behavior in basic solutions [J].