Overall
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
-
Received September 13, 2023
Accepted October 6, 2023
- Acknowledgements
- Metal–organic frameworks · ZIF-67 · Nanoporous carbon · Electric double layer capacitors
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Most Cited
Enhanced Performance of Electrical Double-Layer Capacitor by Controlling the Specifi c Surface Area and Pore Structure of ZIF-67
Abstract
Electrical double-layer capacitance can be enhanced by developing carbon materials with elevated specifi c surface area,
porosity, and electrical conductivity. In this study, we demonstrate a facile approach for synthesizing carbon materials
with a meticulously controlled pore structure of ZIF-67 by a precise manipulation of the precursor solution quantities. The
concentration of the precursor solution aff ected the crystal size of ZIF-67 due to the diff erent nucleation rates. After the
carbonization of the crystals, smaller cobalt nanoparticles were formed within the carbon materials derived from the larger
ZIF-67 crystal. The removal of the nanoparticles by acid treatment induced the formation of porous carbon, resulting in
the enhanced performance of the electrical double-layer capacitors. The nanoporous carbon derived from the largest-sized
ZIF-67 template exhibited a remarkable specifi c capacitance of 157 F/g at a current density of 1 A/g, retaining an impressive
85% of this value after 30,000 charging/discharging cycles at 16 A/g.
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