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Issue 7, 2016
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Nickel sulfide microsphere film on Ni foam as an efficient bifunctional electrocatalyst for overall water splitting

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Abstract

Developing low-cost, efficient, and bifunctional electrocatalysts for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is an appealing yet challenging task. Herein, for the first time, a NiS microsphere film was grown in situ on Ni foam (NiS/Ni foam) via a sulfurization reaction as an efficient bifunctional electrocatalyst for overall water splitting with superior activity and good durability. This NiS/Ni foam electrode delivers 20 mA cm−2 at an overpotential of 158 mV for the HER and 50 mA cm−2 at an overpotential of 335 mV for the OER in 1.0 M KOH. This bifunctional electrode also enables a high-efficiency alkaline water electrolyzer with 10 mA cm−2 at a cell voltage of only 1.64 V, which could be promising in water splitting devices for large-scale hydrogen production.

Graphical abstract: Nickel sulfide microsphere film on Ni foam as an efficient bifunctional electrocatalyst for overall water splitting

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Supplementary files

Article information


Submitted
26 Sep 2015
Accepted
23 Nov 2015
First published
25 Nov 2015

Chem. Commun., 2016,52, 1486-1489
Article type
Communication

Nickel sulfide microsphere film on Ni foam as an efficient bifunctional electrocatalyst for overall water splitting

W. Zhu, X. Yue, W. Zhang, S. Yu, Y. Zhang, J. Wang and J. Wang, Chem. Commun., 2016, 52, 1486
DOI: 10.1039/C5CC08064A

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