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Issue 93, 2015
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An amorphous CoSe film behaves as an active and stable full water-splitting electrocatalyst under strongly alkaline conditions

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Abstract

It is attractive but still remains a big challenge to develop non-noble metal bifunctional electrocatalysts efficient for both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) under alkaline conditions. Herein, an amorphous CoSe film electrodeposited on a Ti mesh (a-CoSe/Ti) is demonstrated to exhibit high electrocatalytic activity and stability for both reactions in 1.0 M KOH. It needs overpotentials of 292 and 121 mV to drive 10 mA cm−2 for OER and HER, respectively. The two-electrode alkaline water electrolyzer affords a water-splitting current of 10 mA cm−2 at a cell voltage of 1.65 V. This work offers an attractive cost-effective catalytic material toward full water splitting applications.

Graphical abstract: An amorphous CoSe film behaves as an active and stable full water-splitting electrocatalyst under strongly alkaline conditions

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Supplementary files

Article information


Submitted
17 Aug 2015
Accepted
21 Sep 2015
First published
22 Sep 2015

Chem. Commun., 2015,51, 16683-16686
Article type
Communication

An amorphous CoSe film behaves as an active and stable full water-splitting electrocatalyst under strongly alkaline conditions

T. Liu, Q. Liu, A. M. Asiri, Y. Luo and X. Sun, Chem. Commun., 2015, 51, 16683 DOI: 10.1039/C5CC06892D

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