Structure control of nitrogen-rich graphene nanosheets using hydrothermal treatment and formaldehyde polymerization for supercapacitors

Wen, Yangyang, Rufford, Thomas E., Hulicova-Jurcakova, Denisa, Zhu, Xiaobo and Wang, Lianzhou (2016) Structure control of nitrogen-rich graphene nanosheets using hydrothermal treatment and formaldehyde polymerization for supercapacitors. ACS Applied Materials and Interfaces, 8 28: 18051-18059. doi:10.1021/acsami.6b04572


Author Wen, Yangyang
Rufford, Thomas E.
Hulicova-Jurcakova, Denisa
Zhu, Xiaobo
Wang, Lianzhou
Title Structure control of nitrogen-rich graphene nanosheets using hydrothermal treatment and formaldehyde polymerization for supercapacitors
Journal name ACS Applied Materials and Interfaces   Check publisher's open access policy
ISSN 1944-8252
1944-8244
Publication date 2016-07-20
Sub-type Article (original research)
DOI 10.1021/acsami.6b04572
Open Access Status Not yet assessed
Volume 8
Issue 28
Start page 18051
End page 18059
Total pages 9
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Formatted abstract
Nitrogen-rich graphene nanosheets (NGN) with intentionally crumpled, stacked, and cross-linked sheet structures were developed using hydrothermal and/or formaldehyde polymerization processes. It is revealed that the hydrothermal treatment produced crumpled NGN (6.0 at% N) with a high surface area of 383 m2·g-1. In contrast, the formaldehyde polymerization process yielded stacked NGN (11.3 at% N) with very low surface area. The combination of formaldehyde polymerization synthesis with hydrothermal treatment led to NGN (14.7 at% N) with a cross-linked structure and a moderate surface area of 88 m2·g-1. Interestingly, this cross-linked NGN exhibited the best electrochemical performance compared with other NGN, with a remarkable specific capacitance of 201 F·g-1 at 0.05 A·g-1 in 1 M H2SO4 electrolyte, and an excellent retention rate of 96.2% of the initial capacitance after 10-000 charge-discharge cycles at a current density of 5 A·g-1 was achieved.
Keyword Graphene
Melamine
Nitrogen-rich
Structure control
Supercapacitors
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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