Composite-coating electrodes for hydrogen evolution reaction

The Ni, Co and Fe composite-coatings were prepared by electrolytic composite-deposition. The characterizations for the hydrogen evolution reaction (HER) were carried out in a 5 M KOH solution. Polarization and impedance measurements have shown that the composite-coating is catalytically more active...

Full description

Saved in:
Bibliographic Details
Published in:Electrochimica acta 1993-06, Vol.38 (8), p.1079-1085
Main Authors: Miao, H.J., Piron, D.L.
Format: Article
Language:English
Subjects:
Chemistry
composite-coating electrode
electrocatalysis
Electrochemistry
Exact sciences and technology
General and physical chemistry
hydrogen evolution reaction
Kinetics and mechanism of reactions
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Ni, Co and Fe composite-coatings were prepared by electrolytic composite-deposition. The characterizations for the hydrogen evolution reaction (HER) were carried out in a 5 M KOH solution. Polarization and impedance measurements have shown that the composite-coating is catalytically more active than the Ni electrode. Overpotential on the Fe composite-coating electrode measured at 100 mA cm −2 are 250 mV less than that on the Ni electrode. ac impedance measurements indicate that high electrocatylitic activities on the composite-coating electrodes are resulted from larger real surface areas on the electrode.
ISSN:0013-4686
1873-3859
DOI:10.1016/0013-4686(93)80216-M