Issue 21, 2018

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

Abstract

Nitrogen-doped hollow carbon materials have been facilely fabricated via the simple carbonization process by using ZIF-8 polyhedrons coated with polydopamine (PDA). ZIF-8 polyhedrons can be used as 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 an enhanced specific capacitance of 253 F g−1 at a current density of 0.2 A g−1 and excellent rate capability with a capacitance retention of 70% at a high current density of 20 A g−1. Moreover, ZIF-8@PDA-C also shows 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.

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

Supplementary files

Article information

Article type
Paper
Submitted
04 Jun 2018
Accepted
12 Sep 2018
First published
14 Sep 2018

New J. Chem., 2018,42, 17389-17395

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, 42, 17389 DOI: 10.1039/C8NJ02775G

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