Hydrothermal preparation of nitrogen-doped graphene sheets via hexamethylenetetramine for application as supercapacitor electrodes
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.
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Issue Date
- 2012-12
- Language
- English
- Article Type
- Article
- Keywords
GRAPHITE OXIDE; ELECTROCHEMICAL PROPERTIES; REDUCTION; STORAGE; HYDRAZINE; STABILITY; FILMS; UREA
- Citation
ELECTROCHIMICA ACTA, v.85, no.15, pp.459 - 466
- ISSN
- 0013-4686
- Appears in Collection
- CBE-Journal Papers(저널논문)
- Files in This Item
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