Synthesis of nitrogen-doped graphene via thermal treatment of graphene oxide within methylimidazole and its capacitance performance as electric double layer capacitor

Authors

Md. Monirul Islam, University of WollongongFollow
Shaikh Nayeem Faisal, University of Sydney
Anup Kumar Roy, University of Sydney
Sonia Ansari, University of Sydney
Dean Cardillo, University of WollongongFollow
Konstantin K. Konstantinov, University of WollongongFollow
Enamul Haque, University of SydneyFollow

RIS ID

104137

Publication Details

Islam, M., Faisal, S., Roy, A., Ansari, S., Cardillo, D., Konstantinov, K. & Haque, E. (2015). Synthesis of nitrogen-doped graphene via thermal treatment of graphene oxide within methylimidazole and its capacitance performance as electric double layer capacitor. Journal of Nanotechnology and Materials Science, 2 (1), 1-5.

Abstract

Nitrogen-doped graphene was successfully synthesised from graphene oxide (GO) and 2-methylimidazole composite via thermal treatment under argon flow at 700oC within 1h. This synthesised N-doped graphene exhibits homogeneous nitrogen doping with concentration of ~5% in three different nitrogen configuration namelypyridinic N, pyrrolic N and graphitic N. The electric double layer capacitor (EDLC) made up with this N-doped graphene showed excellent specific capacitance 274 F/g at current density of 1A/g, which was ~7 times higher than GO. This EDLC capacitor showed excellent cyclic stability up to 5000 cycles with capacity retention of ~91%.