Abstract
In order to maximize the capacitance of electrical double layer (EDL) capacitors per unit electrode volume, higher surface areas are required. This leads to an increasingly greater subdivision of the carbon electrode, namely to pore systems of smaller pore size. When the pore size approaches the ion size, the EDL charging kinetics lows down because of multiple interactions of the ions with the surrounding pore walls. On the other hand, the ion electroadsorption capacity increases just because of this enhanced interaction. Therefore, there is a conflict between improving discharge kinetics and improving capacity. Knowing the effective ion size relative to the pore size can be helpful in optimizing the pore system design in electrodes for EDL capacitors. A thorough technique based on the adsorption of molecular probes in the gas phase and the electroadsorption of different ions was developed to assess pore dimensions. In this report, the technique is applied to the unique case of polyvinylidene chloride (PVDC) based carbon electrodes in an attempt to elucidate its extraordinary high EDL capacitance, in terms of the relation between effective ion size and pore size.
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References
Nishino A (1996) J. Power Sources 60:137
Yata S, Okamoto E, Satake H, Kobota H, Fuji M, Taguchi T, Kinoshita H (1996) J. Power Sources 60:207
Salitra G, Soffer A, Eliad L, Aurbach D (2000) J. Electrochem. Soc. 147:2486
Koresh J, Soffer A (1983) J. Electroanal. Interfacial Chem. 147:223
Eliad L, Salitra G, Soffer A, Aurbach D (2001) J. Phys. Chem. B 105:6880
Endo M, Kim YJ, Ishii K, Inoue T, Nomura T, Miyashita N, Dresselhaus MS (2003) J. Mat. Res. 18:693
Gregg SJ, Sing KS (1967) Adsorption, Surface Area and Porosity, Chapt. 2–4. Academic Press, London
Koresh J, Soffer A (1980) J. Chem. Soc. Faraday Trans. I 76:2472
Koresh J, Soffer A (1980) J. Chem. Soc. Faraday Trans. I 76:2457 (1980)
Pauling L (1939) Nature of the Chemical Bond, Chapt. X. Cornell University Press, Ithaca, N.Y.
Eliad L, Salitra G, Soffer A, Aurbach D (2002) J. Phys. Chem. B 106:10128
Eliad L, Salitra G, Soffer A, Aurbach D (2005) Langmuir 21:3198
Kinoshita K (1988) Carbon, Electrochemical and Physicochemical Properties. Wiley-Interscience, New York, p 305
Endo M, Kim YJ, Takeda T, Maeda T, T Hayashi, Koshiba K, Dresselhaus MS (2004) J. Electrochem. Soc. 148:A1135
Kim YJ, Horie Y, Ozaki S, Matsuzawa Y, Suezaki H, Kim C, Miyashita N, Endo M (2004) Carbon 42:1491
J.C. Farmer, D.V. Fix, G.V. Mack, R.W. Pekala, J.F. Poco, J. Electrochem. Soc. 143 159:7 (1996)
Koresh J, Soffer A (1983) Sep. Sci. Technol. 18:723
Endo M, Maeda T, Takeda T, Kim YJ, Koshiba K, Hara H, Dresselhaus MS (2001) J. Electrochem. Soc. 148:A910 (2001)
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82.47.Uv; 73.22.-f; 73.30.+y; 82.75.-z
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Eliad, L., Pollak, E., Levy, N. et al. Assessing optimal pore-to-ion size relations in the design of porous poly(vinylidene chloride) carbons for EDL capacitors. Appl. Phys. A 82, 607–613 (2006). https://doi.org/10.1007/s00339-005-3440-9
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DOI: https://doi.org/10.1007/s00339-005-3440-9