Electric Double Layer Capacitance of Graphene-Like Materials Derived from Single-Walled Carbon Nanotubes
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概要
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We tried to unwrap single-walled carbon nanotubes (SWCNTs) by reducing the oxidized SWCNTs. A transmission electron microscope (TEM) observation revealed that the unwrapped SWCNTs were transformed from a pristine nanotube structure to a sheet-like (graphene-like) structure. Electrochemical measurements demonstrated that the electric double layer capacitance (EDLC) of SWCNTs increases significantly due to the unwrapping treatment. For example, the EDLC (199 F/g) of the unwrapped SWCNTs in 1 M H2SO4 electrolyte at a current rate of 50 mA/g is about four times greater than that (51.9 F/g) of pristine SWCNTs.
- 2011-01-25
著者
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Kawasaki Shinji
Department Of Bioscience Tokyo University Of Agriculture
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Inoue Tsuyoshi
Department Of Appied Chemistry Faculty Of Engineering Osaka University
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Mori Syunsuke
Department of Materials Science and Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
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