Electrocatalytic activity of Ni-Mo-Cu and Ni-Co-Cu alloys for hydrogen evolution reaction in alkaline medium

被引：50

作者：

Goranova, D. ^{[1
]}

Lefterova, E. ^{[2
]}

Rashkov, R. ^{[1
]}

机构：

[1] Bulgarian Acad Sci, Inst Phys Chem, 11 Acad G Boncheu Str, Sofia 1113, Bulgaria

[2] Bulgarian Acad Sci, Inst Electrochem & Energy Syst, 10 Acad G Boncheu Str, Sofia 1113, Bulgaria

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 08期

关键词：

Triple alloys; Ni-Mo-Cu and Ni-Co-Cu alloys; Hydrogen evolution reaction; Electrocatalytic activity; Electrodeposition; CATHODE MATERIALS; ELECTRODEPOSITION; COATINGS; PERFORMANCE;

D O I：

10.1016/j.ijhydene.2017.10.002

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：

Tri-component Ni-Co-Cu and Ni-Mo-Cu alloys are electrodeposited depending on current density, temperature and copper ion electrolyte concentration. In both systems hydrogen evolution reaction (HER) is studied by polarization dependences and electrochemical impedance spectroscopy (EIS) in 6M KOH. It is shown that the incorporated copper quantity is significant for alloy catalytic activity. The lowest overvoltage and charge transfer resistor values for HER, and respectively, the best catalytic activity, is exhibited by Ni43Co37Cu20 and Ni57Mo27Cu16 alloys. The high electrode activity of Mo-alloys is associated with a well developed surface area whereas in Co-alloys it is attributed also to Ni-Co synergism. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：28777 / 28785

页数：9

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