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Activated carbon prepared from polyaniline base by K2CO3 activation for application in supercapacitor electrodes

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Abstract

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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Acknowledgement

The authors are grateful for the project support by Hunan Provincial Natural Science Foundation of China (07JJ6015).

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Correspondence to Enhui Liu.

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Xiang, X., Liu, E., Li, L. et al. Activated carbon prepared from polyaniline base by K2CO3 activation for application in supercapacitor electrodes. J Solid State Electrochem 15, 579–585 (2011). https://doi.org/10.1007/s10008-010-1130-9

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  • DOI: https://doi.org/10.1007/s10008-010-1130-9

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