Hierarchical Ni-Mo-S nanosheets on carbon fiber cloth : A flexible electrode for efficient hydrogen generation in neutral electrolyte
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Article number | e1500259 |
Journal / Publication | Science Advances |
Volume | 1 |
Issue number | 7 |
Publication status | Published - 7 Aug 2015 |
Externally published | Yes |
Link(s)
DOI | DOI |
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Attachment(s) | Documents
Publisher's Copyright Statement
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85034092298&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(732e70a6-2292-4233-a98b-d725c615e67f).html |
Abstract
A unique functional electrode made of hierarchal Ni-Mo-S nanosheets with abundant exposed edges anchored on conductive and flexible carbon fiber cloth, referred to as Ni-Mo-S/C, has been developed through a facile biomolecule-assisted hydrothermal method. The incorporation of Ni atoms in Mo-S plays a crucial role in tuning its intrinsic catalytic property by creating substantial defect sites as well as modifying the morphology of Ni-Mo-S network at atomic scale, resulting in an impressive enhancement in the catalytic activity. The Ni-Mo-S/C electrode exhibits a large cathodic current and a low onset potential for hydrogen evolution reaction in neutral electrolyte (pH ∼7), for example, current density of 10 mA/cm2 at a very small overpotential of 200 mV. Furthermore, the Ni-Mo-S/C electrode has excellent electrocatalytic stability over an extended period, much better than those of MoS2/C and Pt plate electrodes. Scanning and transmission electron microscopy, Raman spectroscopy, x-ray diffraction, x-ray photoelectron spectroscopy, and x-ray absorption spectroscopy were used to understand the formation process and electrocatalytic properties of Ni-Mo-S/C. The intuitive comparison test was designed to reveal the superior gas-evolving profile of Ni-Mo-S/C over that of MoS2/C, and a laboratory-scale hydrogen generator was further assembled to demonstrate its potential application in practical appliances. 2015 © The Authors, some rights reserved; exclusive licensee American Association forthe Advancement of Science.
Research Area(s)
Citation Format(s)
Hierarchical Ni-Mo-S nanosheets on carbon fiber cloth: A flexible electrode for efficient hydrogen generation in neutral electrolyte. / Miao, Jianwei; Xiao, Fang-Xing; Bin Yang, Hong et al.
In: Science Advances, Vol. 1, No. 7, e1500259, 07.08.2015.
In: Science Advances, Vol. 1, No. 7, e1500259, 07.08.2015.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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