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Iron oxide deposited on metallic nickel for water oxidation

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Abstract

Solar energy is too intermittent to be directly used on a large scale, and thus, a large energy storage system should be developed. One interesting approach is the use of sunlight to perform water splitting for hydrogen production. For such systems, developing an efficient and stable water-oxidizing catalyst is an essential task. Using K2FeO4, we report a simple method to deposit iron oxide on metallic nickel for water oxidation. The Fe/Ni-based electrode, at pH = 13, shows a current density of 1.9 mA cm−2 at an overpotential of 250.0 mV, making it a promising anode for use in water-splitting systems. At a higher overpotential (700.0 mV), a current density of 23.5 mA cm−2 was observed.

Graphical abstract: Iron oxide deposited on metallic nickel for water oxidation

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Publication details

The article was received on 01 Feb 2017, accepted on 10 Mar 2017 and first published on 10 Mar 2017


Article type: Paper
DOI: 10.1039/C7SE00064B
Citation: Sustainable Energy Fuels, 2017, Advance Article
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    Iron oxide deposited on metallic nickel for water oxidation

    M. M. Najafpour and N. J. Moghaddam, Sustainable Energy Fuels, 2017, Advance Article , DOI: 10.1039/C7SE00064B

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