Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 42, Issue 27, Pages 17038-17048Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2017.05.195
Keywords
Nickel sulfide; Nanowires; Hydrogen evolution reaction; Overall water splitting; Bifunctional electrode
Categories
Funding
- National Natural Science Foundation of China [51401034]
- China Postdoctoral Science Foundation [2016M590910]
- Special Fund for Basic Scientific Research of Central Colleges, Changan University [310831172001]
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a low-cost electrode with lawn-like NiS2 nanowire arrays on flexible carbon fiber paper was synthesized, for the first time, via sulfurization of Ni-2(CO3)(OH)(2) precursor. And the performance of this electrode as a bifunctional electrocatalyst toward both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) was evaluated. It shows that NiS2 NWs/CFP requires small overpotentials of 165 mV for HER and 246 mV for OER, respectively, to deliver the current density of 10 mA cm(-2) in 1.0 M KOH. The corresponding symmetric two-electrode alkaline water electrolyzer only needs a cell voltage of 1.59 V to afford 10 mA cm(-2) water-splitting current density. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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