Effects of pore structures on electrochemical behaviors of polyacrylonitrile-based activated carbon nanofibers by carbon dioxide activation
(주)코리아스칼라
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- 2016.04.02
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- 2014.01
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon letters / 15권 / 1호
ㆍ저자명 : Lee, Hye-Min, Kim, Hong-Gun, An, Kay-Hyeok, Kim, Byung-Joo
영어 초록
Activated carbon nanofibers(ACNF) were prepared from polyacrylonitrile (PAN)-based nanofibersusing CO2 activation methods with varying activation process times. The surface and structural characteristics of the ACNF were observed by scanning electron microscopy and X-ray diffraction, respectively. N2 adsorption isotherm characteristics at 77 K were con-firmedby Brunauer-Emmett-Teller and Dubinin-Radushkevich equations. As experimental results, many holes or cavernous structures were found on the fibersurfaces after the CO2 activation as confirmedby scanning electron microscopy analysis. Specificsurface areas and pore volumes of the prepared ACNFs were enhanced within a range of 10 to 30 min of acti-vation times. Performance of the porous PAN-based nanofibersas an electrode for electrical double layer capacitors was evaluated in terms of the activation conditions.
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