Electrochemical properties of nanoporous carbon electrodes∗

• Дата: 2002
• Автори: Lust, E., Nurk, G., Anes, A.J., Arulepp, M., Permann, L., Nigu, P., Oller, P.M.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут фізики конденсованих систем НАН України 2002
• Назва видання: Condensed Matter Physics
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/120601
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Electrochemical properties of nanoporous carbon electrodes∗ / E. Lust, G. Nurk, A.J. Anes, M. Arulepp, L. Permann, P. Nigu, P.M. Oller // Condensed Matter Physics. — 2002. — Т. 5, № 2(30). — С. 307-327. — Бібліогр.: 42 назв. — англ.

Electrical double layer and electrochemical characteristics at the nanoporous carbon | (C₂H₅)₄NBF₄ +acetonitrile interface have been studied by the cyclic voltammetry and impedance spectroscopy methods. The value of zero charge potential (0.23 V vs. SCE in H₂O), the region of ideal polarizability and other characteristics have been established. Analysis of complex plane plots shows that the nanoporous carbon | x M (C₂H₅)₄NBF₄ + acetonitrile interface can be simulated by the equivalent circuit, in which the two parallel conduction parts in the solid and liquid phases are interconnected by the double layer capacitance in parallel with the complex admittance of hindered reaction of the charge transfer process. The values of the characteristic frequency depend on the electrolyte concentration and on the electrode potential, i.e. on the nature of ions adsorbed at the surface of nanoporous carbon electrode.