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Metal-organic framework assisted synthesis of nitrogen-doped hollow carbon materials for enhanced supercapacitor performance

Abstract

Nitrogen-doped hollow carbon materials have been facility fabricated via the simple carbonization process by using ZIF-8 polyhedrons coated by polydopamine (PDA). ZIF-8 polyhedrons can be used as the sacrificial templates for the hollow structures and both ZIF-8 polyhedrons and PDA can be used as carbon and nitrogen sources. Due to the synergistic effect of the hierarchical pore structure and high level N doping, the nitrogen-doped hollow carbon materials can serve as ideal electrode materials for supercapacitors, exhibiting a enhanced specific capacitance of 253 F g-1 at the current density of 0.2 A g-1 and excellent rate capability with the capacitance retention of 70% at the high current density of 20 A g-1. Moreover, the ZIF-8@PDA-C also has excellent electrochemical stability with 93 % capacitance retention over 10 000 cycles. This will also provide a new strategy for configuring nitrogen-doped hollow carbon electrode materials for supercapacitors and other carbon-based energy storage devices.

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Publication details

The article was received on 04 Jun 2018, accepted on 12 Sep 2018 and first published on 14 Sep 2018


Article type: Paper
DOI: 10.1039/C8NJ02775G
Citation: New J. Chem., 2018, Accepted Manuscript
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    Metal-organic framework assisted synthesis of nitrogen-doped hollow carbon materials for enhanced supercapacitor performance

    X. Zhang, Q. Fan, H. Yang, H. Xiao and Y. Xiao, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ02775G

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