Journal
DALTON TRANSACTIONS
Volume 48, Issue 14, Pages 4712-4718Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9dt00195f
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Funding
- National Natural Science Foundation of China [21475115]
- Henan Provincial Science and Technology Innovation Team [C20150026]
- Nanhu Scholars Program of XYNU
- Nanhu Scholars Program for Young Scholars of XYNU
- Natural Science Foundation of Henan Province [162300410230]
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ZnS nanoparticles wrapped in N-doped mesoporous carbon nanosheets are prepared from metal-organic frameworks through a simple co-pyrolysis process. In the composite interface, ZnS nanoparticles are directly loaded on the carbon and form a mesoporous structure, thus providing fast electron and ion dual transfer routes, and efficient electrode reaction kinetics. In addition, the heteroatom N-doping and the small-sized ZnS with embedded carbon can provide more active sites and stable electrode kinetics for electrochemical reactions. As a consequence, this material shows a capacity of 160 mA h g(-1) at 1 A g(-1), and retains 92.9% of its initial capacity after cycling for 1000 times at 5 A g(-1). In the assembled asymmetric device, an energy density of 45.5 W h kg(-1) is obtained. Such superior properties and facile production process of the metal-organic framework-derived composite show great potential in energy storage.
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