|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
Consideration of the partial charge-transfer in the Grahame-Parsons model and the capacitance dispersion under specific ionic adsorption from a mixed 2-electrolyte solutionстатья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
- Авторы: Baturina O.A., Damaskin B.B.
- Журнал: Russian Journal of Electrochemistry
- Том: 30
- Номер: 7
- Год издания: 1994
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 790
- Последняя страница: 798
- Аннотация: Calculation formulas were derived and a program composed for the Grahame-Parsons model, supplemented by the condition of partial charge transfer according to W.Lorenz and G.Salie. Impedance spectra of a polarizable electrode in a mixed two-electrolyte solution of constant ionic strength were analyzed. As an example, a model system Hg/[H2O + mcKBr + (I - m)cKF] was considered. It was shown that with the charge transfer coefficient changing from lambda = 0 to lambda = -0.2 the frequency dispersion of capacitance becomes more pronounced. In consequence, computations of the specific adsorption of anions by the Hurwitz-Parsons method become less accurate; this is caused by the nonequilibrium nature of the original differential capacitance curves. Within the framework of the Grahame-Parsons model, the calculations of equilibrium and nonequilibrium capacitance for lambda = const not-equal 0 were shown to be formally equivalent to the calculations for lambda = 0 but with two modified adsorption parameters. Thus, this model cannot be used for calculating lambda from experimental data.
- Добавил в систему: Дамаскин Борис Борисович