Adenine-functionalized Spongy Graphene for Green and High-Performance Supercapacitors
Author's Department
Physics Department
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https://doi.org/10.1038/srep43104
Document Type
Research Article
Publication Title
Scientific Reports
Publication Date
2-20-2017
doi
10.1038/srep43104
Abstract
© The Author(s) 2017. A simple method is demonstrated to prepare spongy adenine-functionalized graphene (SFG) as interconnected, porous 3-dimensional (3D) network crinkly sheets. Such 3D network structure provides better contact at the electrode/electrolyte interface and facilitates the charge transfer kinetics. The fabricated SFG was characterized by X-ray diffraction (XRD), FTIR, scanning electron microscopy (FESEM), Raman spectroscopy, thermogravimetric analysis (TGA), UV-vis absorption spectroscopy, and transmission electron microscopy (TEM). The synthesized materials have been evaluated as supercapacitor materials in 0.5 M H 2 SO 4 using cyclic voltammetry (CV) at different potential scan rates, and galvanostatic charge/discharge tests at different current densities. The SFG electrodes showed a maximum specific capacitance of 333 F/g at scan rate of 1 mV/s and exhibited excellent cycling retention of 102% after 1000 cycles at 200 mV/s. The energy density was 64.42 Wh/kg with a power density of 599.8 W/kg at 1.0 A/g. Those figures of merit are much higher than those reported for graphene-based materials tested under similar conditions. The observed high performance can be related to the synergistic effects of the spongy structure and the adenine functionalization.
Recommended Citation
APA Citation
El-Gendy, D.
Ghany, N.
El Sherbini, E.
&
Allam, N. K.
(2017). Adenine-functionalized Spongy Graphene for Green and High-Performance Supercapacitors. Scientific Reports, 7,
10.1038/srep43104
https://fount.aucegypt.edu/faculty_journal_articles/1025
MLA Citation
El-Gendy, Dalia M., et al.
"Adenine-functionalized Spongy Graphene for Green and High-Performance Supercapacitors." Scientific Reports, vol. 7, 2017,
https://fount.aucegypt.edu/faculty_journal_articles/1025