Journal
ELECTROCHIMICA ACTA
Volume 154, Issue -, Pages 345-351Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2014.12.096
Keywords
tungsten nitride; nanorods array; hydrogen evolution cathode; all pH values; water splitting
Categories
Funding
- National Natural Science Foundation of China [21277131]
- key Program of Chongqing Municipal Education Commission [KJZH 14206]
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It is highly desired but still remains a challenging task to develop efficient non-noble-metal hydrogen evolution reaction (HER) electrocatalysts operating efficiently under all pH conditions. In this paper, tungsten nitride nanorods array was developed on carbon cloth (WN NA/CC) through nitridation of corresponding WO3 NA/CC precursor with NH3 as an efficient 3D hydrogen evolution cathode with strong durability in acidic solutions. It needs overpotential of 198 mV to achieve current density of 10 mA cm(-2) and it maintains its catalytic activity for at least 60 h. This electrode also performs well under both neutral and alkaline conditions. In addition, this electrode shows nearly 100% Faradaic efficiency at all pH values. (C) 2014 Elsevier Ltd. All rights reserved.
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