Yuan, Yudan, Sun, Yi, Feng, Zhichen, Li, Xingjian, Yi, Ruowei, Sun, Wei, Zhao, Cezhou and Yang, Li
(2021)
Nitrogen-Doped Hierarchical Porous Activated Carbon Derived from Paddy for High-Performance Supercapacitors.
MATERIALS, 14 (2).
E318-.
|
Text
Nitrogen-Doped Hierarchical Porous Activated Carbon Derived from Paddy for High-Performance Supercapacitors.pdf - Published version Download (9MB) | Preview |
Abstract
A facile and environmentally friendly fabrication is proposed to prepare nitrogen-doped hierarchical porous activated carbon via normal-pressure popping, one-pot activation and nitrogen-doping process. The method adopts paddy as carbon precursor, KHCO<sub>3</sub> and dicyandiamide as the safe activating agent and nitrogen dopant. The as-prepared activated carbon presents a large specific surface area of 3025 m<sup>2</sup>·g<sup>-1</sup> resulting from the synergistic effect of KHCO<sub>3</sub> and dicyandiamide. As an electrode material, it shows a maximum specific capacitance of 417 F·g<sup>-1</sup> at a current density of 1 A·g<sup>-1</sup> and very good rate performance. Furthermore, the assembled symmetric supercapacitor presents a large specific capacitance of 314.6 F·g<sup>-1</sup> and a high energy density of 15.7 Wh·Kg<sup>-1</sup> at 1 A·g<sup>-1</sup>, maintaining 14.4 Wh·Kg<sup>-1</sup> even at 20 A·g<sup>-1</sup> with the energy density retention of 91.7%. This research demonstrates that nitrogen-doped hierarchical porous activated carbon derived from paddy has a significant potential for developing a high-performance renewable supercapacitor and provides a new route for economical and large-scale production in supercapacitor application.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | hierarchical porous carbon, paddy, KHCO3, dicyandiamide, supercapacitors |
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 07 Sep 2021 14:30 |
| Last Modified: | 27 Jan 2024 03:00 |
| DOI: | 10.3390/ma14020318 |
| Open Access URL: | https://www.mdpi.com/1996-1944/14/2/318 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3136234 |
Dimensions
Dimensions
