Please use this identifier to cite or link to this item:
|Title:||The electrocapacitive properties of graphene oxide reduced by urea|
|Authors:||Lei, Z. |
|Citation:||Lei, Z., Lu, L., Zhao, X.S. (2012-04). The electrocapacitive properties of graphene oxide reduced by urea. Energy and Environmental Science 5 (4) : 6391-6399. ScholarBank@NUS Repository. https://doi.org/10.1039/c1ee02478g|
|Abstract:||We report a facile and green route to reduce graphite oxide using urea as the reducing agent. UV-Vis, XRD and XPS results revealed that urea was an effective reducing agent in removing oxygen-containing groups from graphite oxide for restoring the conjugated electronic structure of graphene. The obtained reduced graphene oxide was tested as supercapacitor electrode. Gravimetric capacitances of 255 and 100 F g -1 at current densities of 0.5 and 30 A g -1, respectively, were observed. The reduced graphene oxide paper showed a volumetric capacitance of 196 F cm -3. After 1200 continuous cycles of galvanostatic charge-discharge, the electrode retained 93% of its capacitance. The electrocapacitive performance of the urea-reduced graphene oxide outperformed most of the previously reported graphene-based electrode materials, which were reduced by hydrazine or NaBH 4. The present reduction method holds great promise for mass production of soluble graphene-based materials for electrochemical energy storage. This journal is © 2012 The Royal Society of Chemistry.|
|Source Title:||Energy and Environmental Science|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 14, 2018
WEB OF SCIENCETM
checked on Jun 19, 2018
checked on Jun 1, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.