Abstract
HighlightsThe ultrathin nickel metal–organic framework (MOF) nanosheets in situ interpenetrated by functional carboxylated carbon nanotubes (C-CNTs) were successfully constructed. The incorporated C-CNTs effectively adjust the layer thickness of Ni-MOF nanosheets.The integrated hybrid MOF nanosheets delivered the boosted electrochemical performances and exhibited superior specific capacity of 680 C g−1 at 1 A g−1.
Highlights
The aggravations of environmental pollution and global warming have deteriorated the human living conditions and sustainable development of modern economy [1, 2]
The assembly procedure of 2D well-interconnected NiMOF/carboxylated carbon nanotubes (C-CNTs) ultrathin nanosheets is schematically shown in Fig. 1a, which mainly involved solvothermal reaction and solvent exchange steps
After deprotonated H 3BTC ligands coordinated to Ni2+ ions, the bridged ordered chain has self-assembled into 2D Ni-metal–organic framework (MOF) nanosheets along with C-CNTs skeleton
Summary
The aggravations of environmental pollution and global warming have deteriorated the human living conditions and sustainable development of modern economy [1, 2]. Supercapacitors (SCs) have widely aroused scientific and technological interests due to their high-power output, fast charge–discharge kinetics, and long cycle life [8,9,10] These advantages make them become the favorable candidates for applications of portable electronic device or hybrid electric vehicles [11, 12]. The exposed metal active sites could serve as highly active centers to decrease the energy barrier of faradaic redox reactions and to facilitate the capture ability of electrolyte ions, which is conducive to improve the electrochemical reaction kinetics [35, 38, 40] Stimulated by these superiorities, the controllable construction. The assembled hybrid device based on NiMOF/C-CNTs40 demonstrated potential toward the application of supercapacitor
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