標題: Carbon Nanotube/Nitrogen-Doped Reduced Graphene Oxide Nanocomposites and Their Application in Supercapacitors
作者: Yang, Chih-Chieh
Tsai, Meng-Han
Huang, Chun-Wei
Yen, Po-Jen
Pan, Chien-Chung
Wu, Wen-Wei
Wei, Kung-Hwa
Dung, Lan-Rong
Tseng, Tseung-Yuen
材料科學與工程學系
電子工程學系及電子研究所
Department of Materials Science and Engineering
Department of Electronics Engineering and Institute of Electronics
關鍵字: Graphene;Nitrogen-Doped Graphene;Carbon Nanotube;Supercapacitor
公開日期: 1-Aug-2017
摘要: Electrodes of carbon-based nanocomposites with high specific surface areas and suitable pore sizes have high potential for improving power and energy densities of supercapacitors. In this study, nitrogen-doped reduced graphene oxide (NrGO) nanosheets were synthesized to increase the specific surface area of reduced graphene oxide (rGO). The specific surface area of NrGO was increased to 633 m(2)g(-1) compared to that of rGO, 450 m(2)g(-1). A series of NrGO/carbon nanotubes (CNTs) nanocomposites were prepared. By using NrGO/CNTs/polyvinylidene difluoride (PVDF)/carbon black/N-methyl-pyrrolidone (NMP) nanocomposites as both of anode and cathode into two electrodes, such symmetric supercapacitor in the 1 M KOH aqueous electrolyte exhibited high specific capacitance (227 F g(-1) at 20 mV s(-1)), fast rate capability (83% capacitance of current density 1 mA cm(-2) at current density 5 mA cm(-2)), low resistance (0.98 Omega), and excellent cycling stability (87% capacitance retention after 10,000 charge/discharge cycles). Moreover, the symmetric supercapacitor in the ionic liquid (BMIMTFSI) electrolyte possessed a wide operating voltage (3 V) and high energy density (89 Wh kg(-1) at 1 mA cm(-2)). The carbon-based hybrid electrode has high potential for use in energy storage and conversion devices.
URI: http://dx.doi.org/10.1166/jnn.2017.13861
http://hdl.handle.net/11536/145752
ISSN: 1533-4880
DOI: 10.1166/jnn.2017.13861
期刊: JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume: 17
起始頁: 5366
結束頁: 5373
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