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A doped activated carbon prepared from polyaniline for high performance supercapacitors

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TextSeries: ; Journal of Power Sources, 195(5), p.1516-1521, 2010Contained works:

Li, L
Liu., E
Li, J
Yang, Y
Shen, H
Huang, Z
Xiang, X
Xiang, X

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Abstract: A novel doped activated carbon has been prepared from H2SO4-doped polyaniline which is prepared by the oxypolymerization of aniline. The morphology, surface chemical composition and surface area of the carbon have been investigated by scanning electron microscope, X-ray photoelectron spectroscopy and Brunaner-Emmett-Teller measurement, respectively. Electrochemical properties of the doped activated carbon have been studied by cyclic voltammograms, galvanostatic charge/discharge, and electrochemical impedance spectroscopy measurements in 6 mol l-1 KOH. The specific capacitance of the carbon is as high as 235 F g-1, the specific capacitance hardly decreases at a high current density 11Ag-1 after 10,000 cycles, which indicates that the carbon possesses excellent cycle durability and may be a promising candidate for supercapacitors.

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A novel doped activated carbon has been prepared from H2SO4-doped polyaniline which is prepared by the oxypolymerization of aniline. The morphology, surface chemical composition and surface area of the carbon have been investigated by scanning electron microscope, X-ray photoelectron spectroscopy and Brunaner-Emmett-Teller measurement, respectively. Electrochemical properties of the doped activated carbon have been studied by cyclic voltammograms, galvanostatic charge/discharge, and electrochemical impedance spectroscopy measurements in 6 mol l-1 KOH. The specific capacitance of the carbon is as high as 235 F g-1, the specific capacitance hardly decreases at a high current density 11Ag-1 after 10,000 cycles, which indicates that the carbon possesses excellent cycle durability and may be a promising candidate for supercapacitors.

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