3D hierarchical defect-rich NiMo3S4 nanosheet arrays grown on carbon textiles for high-performance sodium-ion batteries and hydrogen evolution reaction

A hierarchical hybrid nanostructure composed of NiMo3S4 nanosheet arrays with abundant exposed edges on flexible carbon textiles (denoted as NiMo3S4/CTs) has been designed and synthesized for sodium ion batteries (SIBs) and electrocatalytic hydrogen evolution reaction (HER). The novel NiMo3S4 nanost...

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Main Authors: Kong, Dezhi, Wang, Ye, Lim, Yew Von, Huang, Shaozhuan, Zhang, Jun, Liu, Bo, Chen, Tupei, Yang, Hui Ying
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/139539
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1395392020-05-20T04:51:18Z 3D hierarchical defect-rich NiMo3S4 nanosheet arrays grown on carbon textiles for high-performance sodium-ion batteries and hydrogen evolution reaction Kong, Dezhi Wang, Ye Lim, Yew Von Huang, Shaozhuan Zhang, Jun Liu, Bo Chen, Tupei Yang, Hui Ying School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Hierarchical Nanosheet Arrays Defect-rich NiMo3S4 Nanoflakes A hierarchical hybrid nanostructure composed of NiMo3S4 nanosheet arrays with abundant exposed edges on flexible carbon textiles (denoted as NiMo3S4/CTs) has been designed and synthesized for sodium ion batteries (SIBs) and electrocatalytic hydrogen evolution reaction (HER). The novel NiMo3S4 nanostructure, formed by incorporating Ni2+ into Mo-S lattice, shows plenty of substantial defects and active sites, which are favorable for the improvement of the overall electrochemical performances for both SIBs and HER. When evaluated as the anode of SIBs, the NiMo3S4/CT electrode delivers a high specific capacity of ~ 480 mA h g−1 at a current density of 0.12 A g−1 and a high Coulombic efficiency of 100%. Moreover, the NiMo3S4/CT electrode shows an excellent long-term cycling performance with a high reversible capacity of ~ 302 mA h g−1 after 1000 cycles at 0.48 A g−1, showing a high capacity retention of 73.9%. Furthermore, as a HER catalyst, the NiMo3S4/CT hybrid nanostructure exhibits a low onset over-potential of 0.124 V, a small Tafel slope of 46.2 mV dec−1 as well as an excellent long-term stability, which are among the best values of current noble-metal-free electrocatalysts. These results may open up a new route to introduce more active defect sites to enhance the electrochemical performance of metal sulfides by incorporation of metal elements. 2020-05-20T04:51:18Z 2020-05-20T04:51:18Z 2018 Journal Article Kong, D., Wang, Y., Lim, Y. V., Huang, S., Zhang, J., Liu, B., . . . Yang, H. Y. (2018). 3D hierarchical defect-rich NiMo3S4 nanosheet arrays grown on carbon textiles for high-performance sodium-ion batteries and hydrogen evolution reaction. Nano Energy, 49, 460-470. doi:10.1016/j.nanoen.2018.04.051 2211-2855 https://hdl.handle.net/10356/139539 10.1016/j.nanoen.2018.04.051 2-s2.0-85046624028 49 460 470 en Nano Energy © 2018 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Hierarchical Nanosheet Arrays
Defect-rich NiMo3S4 Nanoflakes
spellingShingle Engineering::Electrical and electronic engineering
Hierarchical Nanosheet Arrays
Defect-rich NiMo3S4 Nanoflakes
Kong, Dezhi
Wang, Ye
Lim, Yew Von
Huang, Shaozhuan
Zhang, Jun
Liu, Bo
Chen, Tupei
Yang, Hui Ying
3D hierarchical defect-rich NiMo3S4 nanosheet arrays grown on carbon textiles for high-performance sodium-ion batteries and hydrogen evolution reaction
description A hierarchical hybrid nanostructure composed of NiMo3S4 nanosheet arrays with abundant exposed edges on flexible carbon textiles (denoted as NiMo3S4/CTs) has been designed and synthesized for sodium ion batteries (SIBs) and electrocatalytic hydrogen evolution reaction (HER). The novel NiMo3S4 nanostructure, formed by incorporating Ni2+ into Mo-S lattice, shows plenty of substantial defects and active sites, which are favorable for the improvement of the overall electrochemical performances for both SIBs and HER. When evaluated as the anode of SIBs, the NiMo3S4/CT electrode delivers a high specific capacity of ~ 480 mA h g−1 at a current density of 0.12 A g−1 and a high Coulombic efficiency of 100%. Moreover, the NiMo3S4/CT electrode shows an excellent long-term cycling performance with a high reversible capacity of ~ 302 mA h g−1 after 1000 cycles at 0.48 A g−1, showing a high capacity retention of 73.9%. Furthermore, as a HER catalyst, the NiMo3S4/CT hybrid nanostructure exhibits a low onset over-potential of 0.124 V, a small Tafel slope of 46.2 mV dec−1 as well as an excellent long-term stability, which are among the best values of current noble-metal-free electrocatalysts. These results may open up a new route to introduce more active defect sites to enhance the electrochemical performance of metal sulfides by incorporation of metal elements.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Kong, Dezhi
Wang, Ye
Lim, Yew Von
Huang, Shaozhuan
Zhang, Jun
Liu, Bo
Chen, Tupei
Yang, Hui Ying
format Article
author Kong, Dezhi
Wang, Ye
Lim, Yew Von
Huang, Shaozhuan
Zhang, Jun
Liu, Bo
Chen, Tupei
Yang, Hui Ying
author_sort Kong, Dezhi
title 3D hierarchical defect-rich NiMo3S4 nanosheet arrays grown on carbon textiles for high-performance sodium-ion batteries and hydrogen evolution reaction
title_short 3D hierarchical defect-rich NiMo3S4 nanosheet arrays grown on carbon textiles for high-performance sodium-ion batteries and hydrogen evolution reaction
title_full 3D hierarchical defect-rich NiMo3S4 nanosheet arrays grown on carbon textiles for high-performance sodium-ion batteries and hydrogen evolution reaction
title_fullStr 3D hierarchical defect-rich NiMo3S4 nanosheet arrays grown on carbon textiles for high-performance sodium-ion batteries and hydrogen evolution reaction
title_full_unstemmed 3D hierarchical defect-rich NiMo3S4 nanosheet arrays grown on carbon textiles for high-performance sodium-ion batteries and hydrogen evolution reaction
title_sort 3d hierarchical defect-rich nimo3s4 nanosheet arrays grown on carbon textiles for high-performance sodium-ion batteries and hydrogen evolution reaction
publishDate 2020
url https://hdl.handle.net/10356/139539
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