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Electrodeposition of Ni/Ni(OH) 2 Catalytic Films for the Hydrogen Evolution Reaction Produced by using Cyclic Voltammetry
Author(s) -
Yuan Hao,
Lunt Richard R.,
Thompson Joseph I.,
Ofoli Robert Y.
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201600572
Subject(s) - cyclic voltammetry , catalysis , monolayer , platinum , materials science , chemical engineering , hydrogen , hydrogen production , electrochemistry , inorganic chemistry , nanotechnology , chemistry , electrode , organic chemistry , engineering
Effective artificial photosynthesis to produce hydrogen from water requires active, earth‐abundant, and low‐cost electrocatalysts. In this Communication, we present a novel electrodeposition method to produce Ni/Ni(OH) 2 catalytic films in situ on conductive surfaces. The new method involves two cycles of cyclic voltammetry, and produces a catalytic film with a surface morphology consisting of a monolayer of firmly packed walnut‐shaped particles. It has superior catalytic activity compared to catalysts produced through traditional electrodeposition methods under constant current density. The method is a simpler and more cost‐effective way to fabricate highly effective hydrogen evolution electrocatalysts, creating large numbers of Ni(OH) 2 /Ni interfaces that shift the catalyst's performance significantly towards that of platinum.