Nanoporous Phloroglucinol-Formaldehyde Carbon Aerogels for Electrochemical Use

Hyun-Joong Kim; Jin-Hong Kim; Won-Il Kim; Dong Jin Suh

Korean Journal of Chemical Engineering, Vol.22, No.5, 740-744, September, 2005

DOI10.1007/BF02705792 Export Citation

Nanoporous Phloroglucinol-Formaldehyde Carbon Aerogels for Electrochemical Use

Hyun-Joong Kim, Jin-Hong Kim, Won-Il Kim, and Dong Jin Suh^†

Clean Technology Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 136-791, Korea

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Phloroglucinol-Formaldehyde (PF) organic aerogels were prepared from alcoholic sol-gel polycondensation of phloroglucinol with formaldehyde using KOH as base catalyst and followed by supercritical drying with carbon dioxide. Subsequent pyrolysis of PF organic aerogel under He flow produced carbon aerogels. Textural properties of PF organic and carbon aerogels were obtained by nitrogen adsorption-desorption, and their specific capacitances were measured by cyclic voltammetry. The resultant PF carbon aerogels were mostly mesoporous material with high surface area. The nanoporous structure and electrochemical behavior of PF carbon aerogels could be controlled by the molar ratio of phloroglucinol to catalyst (P/C) and carbonization conditions. PF carbon aerogels exhibited the highest surface area in excess of 1,200 m2/g and specific capacitance up to 250 F/g in comparison to other carbons.

Keywords:Sol-Gel;Carbon;Aerogel;Phloroglucinol;Specific Capacitance

[References]

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Barrett EP, Joyner LG, Halenda PP, J. Am. Chem. Soc., 73, 373 (1951)
Brandt R, Petricevic R, Probstle H, Fricke J, J. Porous Mat., 10, 171 (2003)
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Mayer ST, Pekala RW, Kaschmitter JL, J. Electrochem. Soc., 140, 446 (1993)
Pekala RW, J. Mater. Sci., 24, 3221 (1989)
Pekala RW, Kong FM, Polym. Prepr., 30, 221 (1989)
Pekala RW, Farmer JC, Alviso CT, Tran TD, Mayer ST, Miller JM, Dunn B, J. Non-Cryst. Solids, 225, 74 (1998)
Saliger R, Fischer U, Herta C, Fricke J, J. Non-Cryst. Solids, 225, 81 (1998)
Suh DJ, Park TJ, Sonn JH, Han HY, Lim JC, Korean J. Chem. Eng., 17(1), 101 (2000)
Tamon H, Ishizaka H, Milkami M, Okazaki M, Carbon, 35, 791 (1997)
Wang J, Zhang SQ, Guo YZ, Shen J, Attia SM, Zhou B, Zheng GZ, Gui YS, J. Electrochem. Soc., 148(6), D75 (2001)
Yamamoto T, Nishimura T, Suzuki T, Tamon H, J. Non-Cryst. Solids, 288, 46 (2001)
Yim TJ, Kim SY, Yoo KP, Korean J. Chem. Eng., 19(1), 159 (2002)
Zanto EJ, Al-Muhtaseb SA, Ritter JA, Ind. Eng. Chem. Res., 41(13), 3151 (2002)
Zhang SQ, Wang J, Shen J, Deng ZS, Lai ZQ, Zhou B, Attia SM, Chen LY, Nanostruct. Mater., 11, 375 (1999)

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