Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/139539
Title: 3D hierarchical defect-rich NiMo3S4 nanosheet arrays grown on carbon textiles for high-performance sodium-ion batteries and hydrogen evolution reaction
Authors: Kong, Dezhi
Wang, Ye
Lim, Yew Von
Huang, Shaozhuan
Zhang, Jun
Liu, Bo
Chen, Tupei
Yang, Hui Ying
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: 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
Journal: Nano Energy
Abstract: 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.
URI: https://hdl.handle.net/10356/139539
ISSN: 2211-2855
DOI: 10.1016/j.nanoen.2018.04.051
Rights: © 2018 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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