Issue 5, 2017

An efficient nickel oxides/nickel structure for water oxidation: a new strategy

Abstract

A very simple method to synthesize an efficient and stable Ni-based water-oxidizing electrode was reported from the reaction of metallic nickel foam and Oxone (2K2SO5·K2SO4·KHSO4). The Ni-based electrode at pH = 13 yields current densities of at least 4.5 mA cm−2 at an overpotential of 450 mV, which is promising for use as an anode in water splitting systems. After 10 h, not only did the electrode not show a decrease in water oxidation, but an increase in water oxidation was also observed (∼6.0 mA cm−2). At a higher overpotential (837 mV), a current density of 24.3 mA cm−2 was observed, which was approximately 5 times larger than that of pure Ni foam in a similar condition.

Graphical abstract: An efficient nickel oxides/nickel structure for water oxidation: a new strategy

Supplementary files

Article information

Article type
Letter
Submitted
09 Sep 2016
Accepted
01 Feb 2017
First published
02 Feb 2017

New J. Chem., 2017,41, 1909-1913

An efficient nickel oxides/nickel structure for water oxidation: a new strategy

M. M. Najafpour and N. J. Moghaddam, New J. Chem., 2017, 41, 1909 DOI: 10.1039/C6NJ02842J

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