Journal
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 15, Issue 3, Pages 579-585Publisher
SPRINGER
DOI: 10.1007/s10008-010-1130-9
Keywords
Supercapacitor; Polyaniline; Activated carbon; X-ray photoelectron spectroscopy; K2CO3
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Funding
- Hunan Provincial Natural Science Foundation of China [07JJ6015]
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An activated carbon was prepared from a polyaniline base using K2CO3 as an activating agent. The morphology, surface chemical composition, and surface area of the as-prepared carbon materials were investigated by scanning electron microscope, X-ray photoelectron spectroscopy, and Brunauer-Emmett-Teller measurement, respectively. Electrochemical properties of the as-prepared sample were studied by cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy measurements in 6 mol L-1 KOH aqueous solution. Compared with the non-activated carbon, activated carbon showed superior capacitive performance. The activation carbon presented a high specific gravimetric capacitance of 210 F g(-1). The good electrochemical performance of the activated carbon was ascribed to well-developed micropores, high surface area, the presence of nitrogen and oxygen functional groups, and larger pore volume.
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