Journal
ELECTROCHIMICA ACTA
Volume 85, Issue -, Pages 459-466Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2012.08.070
Keywords
Nitrogen-doped graphene; Hexamethylenetetramine; Supercapacitor
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Funding
- BK 21 Program
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Nitrogen-doped graphene sheets (NGS) were obtained using a simple hydrothermal reaction with graphene oxide and hexamethylenetetramine (HMT). HMT plays important roles in both reducing graphene oxide and doping nitrogen into the graphene sheets. The prepared nitrogen-doped graphene sheets reduced by hexamethylenetetramine (NGS-HMT) have a high nitrogen (8.62 atom%) content, in which various nitrogen species, such as pyridinic-N, pyrrolic-N, and quaternary-N, are detected. For supercapacitor applications, NGS-HMT shows a value of 161 Fg(-1) at a current density of 0.5 Ag-1, and it also exhibits a high cycle stability. (C) 2012 Elsevier Ltd. All rights reserved.
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