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논문 기본 정보

저자정보
(Korea Institute of Ceramic Engineering & Technolog)
저널정보
한양대학교 청정에너지연구소 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제13권 제S2호
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    초록·키워드

    Oxygen functional groups were removed from activated carbon in order to improve the electrochemical supercapacitor performance. Commercially available and surface-modified activated carbon electrodes were compared in non-aqueous electrolyte, which allowed stable experimentation at high voltages. N2-adsorption, FT-IR, and elemental analyzer were used to characterize the surface areas, pore volumes, surface chemical compositions, and oxygen content. Surface area and oxygen content were decreased by heat-treatment at high temperature. Despite the decreased surface area, both of the commercially available and surface-modified activated carbons showed similar specific capacitance of 18.6 Fcc-1 and 18.2 Fcc-1, respectively. Also electrochemical impedance spectra, stability at high voltage and cycle performance showed that surface-modified activated carbon had outstanding electrochemical performance due to the decrease in oxygen content of the commercial activated carbon.

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