Capacitor, electrical double layer

Tanahashi, 1., Yoshida, A. and Nishino, A., Electrochemical characterization of activated carbon fiber cloth polarizable electrodes for electric double layer capacitors. J. Electrochem. Soc., 1990, 137(10), 3052 3056. 

Ishikawa, M., Morita, M., lhara, M. and Matsuda, Y., Electric double layer capacitor composed of activated carbon fiber cloth electrodes and solid polymer electrolytes containing alkylammonium salt, J. Electrochem. Soc., 1994, 141(7), 1730 1734. 

Ishikawa, M., Sakamoto, A., Morita, M., Matsuda, Y. and Ishida, K., Effect of treatment of activated carbon fiber cloth electrodes with cold plasma upon performance of electric double layer capacitors, J. Power Sources, 1996, 60(2), 233 238. 

High porosity carbons ranging from typically microporous solids of narrow pore size distribution to materials with over 30% of mesopore contribution were produced by the treatment of various polymeric-type (coal) and carbonaceous (mesophase, semi-cokes, commercial active carbon) precursors with an excess of KOH. The effects related to parent material nature, KOH/precursor ratio and reaction temperature and time on the porosity characteristics and surface chemistry is described. The results are discussed in terms of suitability of produced carbons as an electrode material in electric double-layer capacitors. 

Porous carbons are among the most attractive electrode materials for electric double layer capacitors (EDLC), where the charge accumulation occurs mainly by electrostatic attraction forces at the clcctrode/electrolyte interface [1-3]. Advantages of this class of materials include high surface... 

Fig. 7. A schematic diagram of an electric double-layer capacitor using active carbon electrodes.

ECs are another promising electrical energy storage device with a higher energy density than electrical capacitors, and a better rate capability and cycling stability than LIBs [32]. Carbon-based electric double layer capacitors and metal oxide- or polymer-based pseudocapacitors are two main types of ECs. The charge-... 

Waals forces and the liquid/gas surface tension forces in the multilayer gas adsorption EDLC Electric double-layer capacitor... 

The topic of this book is focused on active masses containing carbon, either as an active mass (e.g., negative mass of lithium-ion battery or electrical double layer capacitors), as an electronically conducting additive, or as an electronically conductive support for catalysts. In some cases, carbon can also be used as a current collector (e.g., Leclanche cell). This chapter presents the basic electrochemical characterization methods, as applicable to carbon-based active materials used in energy storage and laboratory scale devices. 

The template carbons demonstrate interesting performance in electric double layer capacitors [109], especially the mesoporous carbons prepared using MgO as the template [105,110], Asymmetric electric double layer capacitors constructed from these mesoporous carbons coupled with amicroporous activated carbon display high capacitance and high rate performance [111]. 

Before closing this chapter, it has to be emphasized that carbon materials have a wide range of structures and textures, which strongly depend on the preparation conditions. When they are applied for electrochemistry, their detailed structure and texture must be exactly understood. The following chapters will present the practical applications of various carbons in various electrochemical devices, such as lithium-ion rechargeable batteries, electric double layer capacitors, fuel cells, and primary batteries. 

Endo, M., Takeda, T., Kim, Y.J., Koshiba, K., and Ishii, K. High power electric double layer capacitor (EDLC s) From operating principle to pore size control in advanced activated carbons. Carbon Sci. 1, 2001 117-128. 

Lin, R., Taberna, P.L., Chmiola, J., Guay, D., Gogotsi, Y., Simon, P. Microelectrode study of pore size, ion size and solvent effects on the charge/discharge behavior of microporous carbons for electrical double layer capacitors. J. Electrochem. Soc. 156(1), 2009 A7-A12. 

Lust, E., Janes, A., and Arulepp, M. Influence of electrolyte characteristics on the electrochemical parameters of electrical double layer capacitors. J. Solid State Electr., 8, 2004 488-496. 

Largeot, C., Portet, C., Chmiola, J., Taberna, P.-L., Gogotsi, Y., and Simon, P. Relation between the ion size and pore size for an electric double-layer capacitor. J. Am. Chem. Soc. 130, 2008 2730-2731. 

Kyotani, T. Template synthesis of ordered microporous carbons and their electric double layer capacitor performance. Prep. Pap.-Am. Chem. Soc., Div. Fuel Chem. 51, 2006 33-35. 

---