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Composite of hierarchical metal-organic framework derived nitrogen-doped porous carbon and interpenetrating 3D hollow carbon sphere from lotus pollen for high-performance supercapacitors

Abstract

Composites (HPNCs/CS) of hierarchical metal-organic framework derived nitrogen-doped porous carbon (HPNCs) and interpenetrating 3D hollow carbon sphere from lotus pollen (CS) are prepared via facile carbonization of Zn-metal-organic frameworks (ZIF-8) by controlling appropriate temperature. In comparison with single 3D hollow carbon sphere from lotus pollen, HPNCs/CS reduce the agglomeration of HPNCs and increase the specific surface area, also promote electrical conductivity. In this work, HPNCs/CS materials exhibit high electrochemical performances with a high specific capacitance of 280 F g-1 in 6 M KOH electrolyte at a current density of 1 A g-1. Moreover, the symmetric supercapacitor (HPNCs/CS // HPNCs/CS) exhibits a special energy density about 16.2 Wh kg-1 at the power density of 0.45 kW kg-1 in the wide voltage region of 0-1.8 V and a superb cycle stability (89.0% capacitance retention after 10,000 cycles) at 0.5 A g-1. Such marked response in electrochemical behaviors shows that HPNCs/CS // HPNCs/CS is a promising practical energy-storage facility.

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Publication details

The article was received on 06 Jul 2017, accepted on 12 Sep 2017 and first published on 13 Sep 2017


Article type: Paper
DOI: 10.1039/C7NJ02427D
Citation: New J. Chem., 2017, Accepted Manuscript
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    Composite of hierarchical metal-organic framework derived nitrogen-doped porous carbon and interpenetrating 3D hollow carbon sphere from lotus pollen for high-performance supercapacitors

    L. Xin, R. Chen, Q. Liu, J. Liu, Z. Li, R. Li and J. Wang, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ02427D

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