Issue 8, 2013
From the journal:

Journal of Materials Chemistry A

Pyrrolic-structure enriched nitrogen doped graphene for highly efficient next generation supercapacitors

Fathy M. Hassan,a   Victor Chabot,a   Jingde Li,a   Brian Kihun Kim,a   Luis Ricardez-Sandoval*a  and  Aiping Yu*a  

* Corresponding authors

a Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute for Sustainable Energy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1
E-mail: aipingyu@uwaterloo.ca, laricard@uwaterloo.ca

Abstract

This study reports the preparation of pyrrolic-structure enriched nitrogen doped graphene by hydrothermal synthesis at varied temperature. The morphology, structure and composition of the prepared nitrogen doped graphene were confirmed with SEM, XRD, XPS and Raman spectroscopy. The material was tested for supercapacitive behavior. It was found that doping graphene with nitrogen increased the electrical double layer supercapacitance to as high as 194 F gāˆ’1. Furthermore, density functional theory (DFT) calculations showed the proper level of binding energy found between the pyrrolic-nitrogen structure and the electrolyte ions, which may be used to explain the highest contribution of the pyrrolic-structure to the capacitance.

Graphical abstract: Pyrrolic-structure enriched nitrogen doped graphene for highly efficient next generation supercapacitors

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Article information

DOI
https://doi.org/10.1039/C2TA01064J
Article type
Paper
Submitted
12 Nov 2012
Accepted
19 Dec 2012
First published
19 Dec 2012

J. Mater. Chem. A, 2013,1, 2904-2912

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Pyrrolic-structure enriched nitrogen doped graphene for highly efficient next generation supercapacitors

F. M. Hassan, V. Chabot, J. Li, B. K. Kim, L. Ricardez-Sandoval and A. Yu, J. Mater. Chem. A, 2013, 1, 2904 DOI: 10.1039/C2TA01064J

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