Effects of carbonization temperature on pore development in polyacrylonitrile-based activated carbon nanofibers

이혜민; An  Kay-Hyeok (안계혁); KIM Byung-Joo (김병주)

Effects of carbonization temperature on pore development in polyacrylonitrile-based activated carbon nanofibers

Carbon Letters
Abbr : Carbon Lett.
2014, 15(2), pp.146-150
Publisher : Korean Carbon Society
Research Area : Natural Science > Natural Science General > Other Natural Sciences General

이혜민 ¹, An Kay-Hyeok ¹, KIM Byung-Joo ¹

¹(재) 한국탄소융합기술원

Accredited

ABSTRACT

In this work, activated carbon nanofiber (ACNF) electrodes with high double-layer capacitance and good rate capability were prepared from polyacrylonitrile nanofibers by optimizing the carbonization temperature prior to H2O activation. The morphology of the ACNFs was observed by scanning electron microscopy. The elemental composition was determined by analysis of X-ray photoelectron spectroscopy. N2-adsorption-isotherm characteristics at 77 K were confirmed by Brunauer-Emmett-Teller and Dubinin-Radushkevich equations. ACNFs processed at different carbonization temperatures were applied as electrodes for electrical double-layer capacitors. The experimental results showed that the surface morphology of the CNFs was not significantly changed after the carbonization process, although their diameters gradually decreased with increasing carbonization temperature. It was found that the carbon content in the CNFs could easily be tailored by controlling the carbonization temperature. The specific capacitance of the prepared ACNFs was enhanced by increasing the carbonization temperature.

KEYWORDS

carbon nanofibers, H2O activation, super-capacitor, carbonization temperature

Citation status

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Total Citation Counts(KCI+WOS) (22) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

* References for papers published after 2023 are currently being built.

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Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04