Journal
CARBON
Volume 121, Issue -, Pages 330-336Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2017.06.017
Keywords
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Funding
- Australian Research Council [DP150100765]
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Nitrogen-doped porous carbon/carbon nanotube composite was prepared by in situ growth of porous nitrogen-abundant ZIF-8 nanoparticles onto carbon nanotubes (CNT) and subsequent carbonization at 800 degrees C. With the aid of polydopamine coating, the distribution of ZIF-8 particles on CNTs could be controlled by varying the synthesis time of ZIF-8. Due to the synergy of high electrical conductivity of carbon nanotubes and abundant nitrogen active sites of ZIF-8-derived carbon, the as-prepared composite material (CNT@CZIF-2) with a BET surface area of 287 m(2) g(-1) was tested as supercapacitor electrode, and it exhibited specific capacitance of 324 F g(-1) and 93.5% of capacitance retention after 1000 cycles in an alkaline aqueous electrolyte solution. Such excellent energy storage performance was superior to that achieved by most of the reported CNT-based electrodes. (C) 2017 Elsevier Ltd. All rights reserved.
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