Controllable design of nanoworm-like nickel sulfides for efficient electrochemical water splitting in alkaline media

Chen, Z; Ibrahim, I; Hao, D; Liu, X; Wu, L; Wei, W; Su, D; Ni, BJ

Controllable design of nanoworm-like nickel sulfides for efficient electrochemical water splitting in alkaline media

Chen, Z

Ibrahim, I Hao, D Liu, X Wu, L Wei, W Su, D

Ni, BJ

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Materials Today Energy, 2020, 18
Issue Date:: 2020-12-01

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Field	Value	Language
dc.contributor.author	Chen, Z https://orcid.org/0000-0003-0627-0856
dc.contributor.author	Ibrahim, I
dc.contributor.author	Hao, D
dc.contributor.author	Liu, X
dc.contributor.author	Wu, L
dc.contributor.author	Wei, W
dc.contributor.author	Su, D https://orcid.org/0000-0002-3972-8205
dc.contributor.author	Ni, BJ
dc.date.accessioned	2021-08-11T10:02:54Z
dc.date.available	2021-08-11T10:02:54Z
dc.date.issued	2020-12-01
dc.identifier.citation	Materials Today Energy, 2020, 18
dc.identifier.issn	2468-6069
dc.identifier.issn	2468-6069
dc.identifier.uri	http://hdl.handle.net/10453/150099
dc.description.abstract	© 2020 Elsevier Ltd Developing cost-effective electrocatalysts for electrochemical water splitting (EWS) is appealing and challenging for sustainable water electrolysis. Currently, nickel sulfides are considered as promising candidates for EWS due to their low cost and high catalytic activity. However, the facile design of nickel sulfides with high catalytic performance is still highly demanded. In this study, we have developed a one-step solvothermal strategy to construct nickel sulfides as efficient water splitting catalysts. By taking advantage of the small size, abundant active sites, large electrochemical surface area, and good conductivity, the nanoworm-like nickel sulfides (NiS-NW/Ni foam [NF]) exhibit better oxygen evolution reaction performance (a low overpotential of 279 mV to achieve 100 mA cm−2, Tafel slope of 38.44 mV dce−1) than the nanoplate-like analogs, as well as most of reported nickel sulfide–based electrocatalysts. In addition, the NiS-NW/NF directly used as bifunctional electrodes for overall water splitting requires a low voltage of 1.563 V to attain a current density of 10 mA cm−2 with good long-term durability. This work provides a facile strategy for the design of efficient nickel sulfide-based electrocatalysts for energy conversion applications.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation	http://purl.org/au-research/grants/arc/FT160100195
dc.relation.ispartof	Materials Today Energy
dc.relation.isbasedon	10.1016/j.mtener.2020.100573
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.title	Controllable design of nanoworm-like nickel sulfides for efficient electrochemical water splitting in alkaline media
dc.type	Journal Article
utslib.citation.volume	18
utslib.for	0303 Macromolecular and Materials Chemistry
utslib.for	0912 Materials Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
utslib.copyright.embargo	2022-12-01T00:00:00+1000Z
dc.date.updated	2021-08-11T10:02:53Z
pubs.publication-status	Published
pubs.volume	18

Abstract:

© 2020 Elsevier Ltd Developing cost-effective electrocatalysts for electrochemical water splitting (EWS) is appealing and challenging for sustainable water electrolysis. Currently, nickel sulfides are considered as promising candidates for EWS due to their low cost and high catalytic activity. However, the facile design of nickel sulfides with high catalytic performance is still highly demanded. In this study, we have developed a one-step solvothermal strategy to construct nickel sulfides as efficient water splitting catalysts. By taking advantage of the small size, abundant active sites, large electrochemical surface area, and good conductivity, the nanoworm-like nickel sulfides (NiS-NW/Ni foam [NF]) exhibit better oxygen evolution reaction performance (a low overpotential of 279 mV to achieve 100 mA cm−2, Tafel slope of 38.44 mV dce−1) than the nanoplate-like analogs, as well as most of reported nickel sulfide–based electrocatalysts. In addition, the NiS-NW/NF directly used as bifunctional electrodes for overall water splitting requires a low voltage of 1.563 V to attain a current density of 10 mA cm−2 with good long-term durability. This work provides a facile strategy for the design of efficient nickel sulfide-based electrocatalysts for energy conversion applications.

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http://hdl.handle.net/10453/150099