ELECTROCATALYTIC ACTIVITY OF NICKEL BLACK ELECTRODES FOR THE HYDROGEN EVOLUTION REACTION IN ALKALINE-SOLUTIONS

被引：9

作者：

CHIALVO, AC

DECHIALVO, MRG

机构：

[1] Programa de Electroquímica Aplicada e Ingeniería Electroquímica (PRELINE), Facultad de Ingeniería Química (UNL), Sante Fe, 3000

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 1991年 / 21卷 / 05期

关键词：

D O I：

10.1007/BF01024582

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrocatalytic activity of nickel black electrodes for the hydrogen evolution reaction (HER) in alkaline solutions was studied. Three types of electrode were obtained through electrodeposition from different plating baths and their electrocatalytic properties were evaluated through slow potentiodynamic sweeps. The apparent and real exchange current densities and the Tafel slopes were calculated and compared to those of Raney nickel electrodes. The importance of the superficial topography on the apparent electrocatalytic characteristics was emphasized and some evidence was given to demonstrate that, when the electrode is previously aged in alkaline solution, the HER is produced on a thin nickel hydroxide overlayer.

引用

页码：440 / 445

页数：6

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