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Issue 37, 2015
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NiCo2S4 nanowires array as an efficient bifunctional electrocatalyst for full water splitting with superior activity

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Abstract

The present communication reports the topotactic conversion of NiCo2O4 nanowires array on carbon cloth (NiCo2O4 NA/CC) into NiCo2S4 NA/CC, which is used as an efficient bifunctional electrocatalyst for water splitting with good durability and superior activity in 1.0 M KOH. This NiCo2S4 NA/CC electrode produces 100 mA cm−2 at an overpotential of 305 mV for hydrogen evolution and 100 mA cm−2 at an overpotential of 340 mV for oxygen evolution. To afford a 10 mA cm−2 water-splitting current, the alkaline water electrolyzer made from NiCo2S4 NA/CC needs a cell voltage of 1.68 V, which is 300 mV less than that for NiCo2O4 NA/CC, and has good stability.

Graphical abstract: NiCo2S4 nanowires array as an efficient bifunctional electrocatalyst for full water splitting with superior activity

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Supplementary files

Article information


Submitted
19 Jun 2015
Accepted
24 Aug 2015
First published
10 Sep 2015

Nanoscale, 2015,7, 15122-15126
Article type
Communication

NiCo2S4 nanowires array as an efficient bifunctional electrocatalyst for full water splitting with superior activity

D. Liu, Q. Lu, Y. Luo, X. Sun and A. M. Asiri, Nanoscale, 2015, 7, 15122 DOI: 10.1039/C5NR04064G

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