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HERO ID
7942520
Reference Type
Journal Article
Title
Designed synthesis of porous NiMoO4/C composite nanorods for asymmetric supercapacitors
Author(s)
Tong, B; Wei, W; Chen, X; Wang, J; Ye, W; Cui, S; Chen, W; Mi, L
Year
2019
Is Peer Reviewed?
Yes
Journal
CrystEngComm
ISSN:
1466-8033
Volume
21
Issue
36
Page Numbers
5492-5499
Language
English
DOI
10.1039/c9ce01031a
Web of Science Id
WOS:000486311800013
Abstract
Porous and carbon composited binary transition metal oxide nanomaterials provide high ionic conductivity and electronic conductivity. However, it still remains a challenge to use a simple method to achieve in situ both composite and porous one-dimensional (1D) nanorods. In this paper, we have prepared porous NiMoO4/C (NMO/C) composite nanorods using a solvothermal method and subsequent annealing step. In the solvothermal reaction, a simple organic solvent, cyclohexane, was introduced as a carbon source and pore-forming agent, realizing the controllable synthesis of porous 1D nanorods composited with heteroatoms via a simple strategy. This structure shows improved ionic and electronic conductivities and provides a large number of electrochemical reaction active sites, making it a possible candidate to be used as a high capacity electrode material for supercapacitors. On this basis, electrode materials with higher rate performance and utilization were prepared by mixing NMO/C with carbon nanotubes (CNTs) through simple physical mixing. Due to the 1D electrochemical synergistic effects of NMO/C and CNTs, the assembled NMO/C-CNT electrode shows a specific capacity of 325.1 F g-1 (at a current density of 0.5 A g-1) in a two-electrode system. At a high current density of 8 A g-1, the specific capacity is still 182 F g-1. This report provides a new strategy for the designed in situ synthesis of porous composite nanorods. 2019 The Royal Society of Chemistry.
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