High-cell-voltage supercapacitor of carbon nanotube/carbon cloth operating in neutral aqueous solution
Journal
Journal of Materials Chemistry
Journal Volume
22
Journal Issue
8
Pages
3383-3387
Date Issued
2012
Author(s)
Abstract
Dense and entangled carbon nanotubes (CNTs) directly grown on the carbon cloth (CC) have been employed as hierarchical supercapacitor electrodes in neutral aqueous electrolyte of Na 2SO 4. XPS and Raman results show the CNTs with large amounts of oxygen functionalities and high degree of disorder, respectively, after treatment of electrochemical oxidation. The voltammograms and galvanostatic charge/discharge are performed to probe the capacitive characteristics of CNTs/CC electrode. Moreover, the symmetric supercapacitor of CNTs/CC exhibits an excellent cyclability over 10000 cycles and high energy density of 27.8 Wh kg -1, with a wide cell potential of 2 V and a large specific capacitance of 210 F g -1. © 2012 The Royal Society of Chemistry.
SDGs
Publisher
Royal Society of Chemistry
Type
journal article