Effects of pore structures on electrochemical behaviors of polyacrylonitrile-based activated carbon nanofibers by carbon dioxide activation Lee, Hye-Min; Kim, Hong-Gun; An, Kay-Hyeok; Kim, Byung-Joo;
Activated carbon nanofibers (ACNF) were prepared from polyacrylonitrile (PAN)-based nanofibers using 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. adsorption isotherm characteristics at 77 K were confirmed by Brunauer-Emmett-Teller and Dubinin-Radushkevich equations. As experimental results, many holes or cavernous structures were found on the fiber surfaces after the activation as confirmed by scanning electron microscopy analysis. Specific surface areas and pore volumes of the prepared ACNFs were enhanced within a range of 10 to 30 min of activation times. Performance of the porous PAN-based nanofibers as an electrode for electrical double layer capacitors was evaluated in terms of the activation conditions.
Electrochemical behavior of pitch-based activated carbon fibers for electrochemical capacitors, Energy Conversion and Management, 2016, 125, 347
A study on elemental mercury adsorption behaviors of nanoporous carbons with carbon dioxide activation, Carbon letters, 2014, 15, 4, 295
The surface chemical properties of multi-walled carbon nanotubes modified by thermal fluorination for electric double-layer capacitor, Applied Surface Science, 2015, 347, 250
Hierarchical porous carbon fibers prepared using a SiO2 template for high-performance EDLCs, Chemical Engineering Journal, 2015, 263, 62
Supercapacitors utilizing electrodes derived from polyacrylonitrile fibers incorporating tetramethylammonium oxalate as a porogen, Carbon, 2016, 106, 20
Lu X, Wang G, Zhai T, Yu M, Xie S, Ling Y, Liang C, Tong Y, Li Y. Stabilized TiN nanowire arrays for high-performance and flexible supercapacitors. Nano Lett, 12, 5376 (2012). http://dx.doi.org/10.1021/nl302761z.
Nyholm L, Nystrom G, Mihranyan A, Stromme M. Toward flexible polymer and paper-based energy storage devices. Adv Mater, 23, 3751 (2011). http://dx.doi.org/10.1002/adma.201004134.
Yu P, Li Y, Yu X, Zhao X, Wu L, Zhang Q. Polyaniline nanowire arrays aligned on nitrogen-doped carbon fabric for high-performance flexible supercapacitors. Langmuir, 29, 12051 (2013). http://dx.doi.org/10.1021/la402404a.
Hao L, Li X, Zhi L. Carbonaceous electrode materials for supercapacitors. Adv Mater, 25, 3899 (2013). http://dx.doi.org/10.1002/adma.201301204.
Lee HM, Kang HR, An KH, Kim HG, Kim BJ. Comparative studies of porous carbon nanofibers by various activation methods. Carbon Lett, 14, 180 (2013). http://dx.doi.org/10.5714/CL.2013.14.3.180.
Lee HM, Bae KM, Kang HR, An KH, Kim HG, Kim BJ. Preparation and characterization of polyacrylonitrile-based porous carbon nanofibers activated by zinc chloride. Appl Chem Eng, 24, 370 (2013).
Kumagai S, Ishizawa H, Toida Y. Influence of solvent type on dibenzothiophene adsorption onto activated carbon fiber and granular coconut-shell activated carbon. Fuel, 89, 365 (2010). http://dx.doi.org/10.1016/j.fuel.2009.08.013.
Al-Saleh MH, Saadeh WH, Sundararaj U. EMI shielding effectiveness of carbon based nanostructured polymeric materials: a comparative study. Carbon, 60, 146 (2013). http://dx.doi.org/10.1016/j.carbon.2013.04.008.
Lim CS, Guzman M, Schaefer J, Minaie B. Fabrication and properties of dense thin films containing functionalized carbon nanofibers. Thin Solid Films, 534, 111 (2013). http://dx.doi.org/10.1016/j.tsf.2013.02.010.
Kim Y, Cho S, Lee S, Lee YS. Fabrication and characterization of porous non-woven carbon based highly sensitive gas sensors derived by magnesium oxide. Carbon Lett, 13, 254 (2012). http://dx.doi.org/10.5714/CL.2012.13.4.254.
Chen Y, Li X, Park K, Song J, Hong J, Zhou L, Mai YW, Huang H, Goodenough JB. Hollow carbon-nanotube/carbon-nanofiber hybrid anodes for Li-ion batteries. J Am Chem Soc, 135, 16280 (2013). http://dx.doi.org/10.1021/ja408421n.
Zhang L, Aboagye A, Kelkar A, Lai C, Fong H. A review: carbon nanofibers from electrospun polyacrylonitrile and their applications. J Mater Sci, 49, 463 (2014). http://dx.doi.org/10.1007/s10853-013-7705-y.
Brunauer S, Emmett PH, Teller E. Adsorption of gases in multimolecular layers. J Am Chem Soc, 60, 309 (1938). http://dx.doi.org/10.1021/ja01269a023.
Dubinin MM. Generalization of the theory of volume filling of micropores to nonhomogeneous microporous structures. Carbon, 23, 373 (1985). http://dx.doi.org/10.1016/0008-6223(85)90029-6.
Dubinin MM. On methods for estimating micropore parameters of carbon adsorbents. Carbon, 26, 97 (1988). http://dx.doi.org/10.1016/0008-6223(88)90014-0.
Wang MX, Huang ZH, Shimohara T, Kang F, Liang K. NO removal by electrospun porous carbon nanofibers at room temperature. Chem Eng J, 170, 505 (2011). http://dx.doi.org/10.1016/j. cej.2011.01.017.