Covalent surface modification of chemically derived graphene and its application as supercapacitor electrode material
IR@CMERI: CSIR- Central Mechanical Engineering Research Institute (CMERI), Durgapur
View Archive InfoField | Value | |
Title |
Covalent surface modification of chemically derived graphene and its application as supercapacitor electrode material
|
|
Creator |
Jana, Milan
Khanra, Partha Murmu, Naresh Chandra Samanta, Pranab Lee, Joong Hee Kuila, Tapas |
|
Subject |
Materials
|
|
Description |
A simple and effective method using 6-amino-4-hydroxy-2-naphthalenesulfonic acid (ANS) for the synthesis of water dispersible graphene has been described. Ultraviolet-visible (UV-vis) spectroscopy reveals that ANSmodified reduced graphene oxide (ANS-rGO) obeys Beers law at moderate concentrations. Fourier transform infrared and X-ray photoelectron spectroscopies provide quantitative information regarding the removal of oxygen functional groups from graphene oxide (GO) and the appearance of new functionalities in ANS-rGO. The electrochemical performances of ANS-rGO have been determined by cyclic voltammetry, charge–discharge and electrochemical impedance spectroscopy analysis. Charge–discharge experiments show that ANS-rGO is an outstanding supercapacitor electrode material due to its high specific capacitance (375 F g-1 at a current density of 1.3 A g-1) and very good electrochemical cyclic stability (B97.5% retention in specific capacitance after 1000 charge–discharge cycles). ANS-rGO exhibits promising characteristics with a very high power density (1328 W kg-1) and energy density (213 W h kg-1).
|
|
Publisher |
Royal Society of Chemistry
|
|
Date |
2014
|
|
Type |
Article
PeerReviewed |
|
Identifier |
Jana, Milan and Khanra, Partha and Murmu, Naresh Chandra and Samanta, Pranab and Lee, Joong Hee and Kuila, Tapas (2014) Covalent surface modification of chemically derived graphene and its application as supercapacitor electrode material. Phys. Chem. Chem. Phys., 16. pp. 7618-7626.
|
|
Relation |
http://cmeri.csircentral.net/21/
|
|