Publication: Langmuir adsorption processes and ion transport under bias potential in capacitive deionisation cells
Дата
2020
Авторы
Alexe-Ionescu, A. L.
Evangelista, L. R.
Lamberti, A.
Pedico, A.
Barbero, G.
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Аннотация
© 2020 Elsevier LtdThe electric response of a capacitive deionisation cell submitted to a periodic external electric field is investigated. The case in which the applied potential has a nonzero average value on one period (polarised cell) is considered. The theoretical analysis of the experimental data, relevant to nearly symmetric electrodes, is done in the framework of the Poisson-Nernst-Planck model. The current densities on the electrodes are described by kinetic equations related to the adsorption phenomenon in the presence of a bias potential. We propose a new form for the Langmuir isotherm in which the effective adsorption coefficients depend on the bias potential according to the Boltzmann statistics. This kinetic equation extends the Butler-Volmer equation for non-blocking electrodes also to the blocking ones. The equation proposed here is such that for dc external voltage the total current across the electrodes vanishes.
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Langmuir adsorption processes and ion transport under bias potential in capacitive deionisation cells / Alexe-Ionescu, A.L. [et al.] // Electrochimica Acta. - 2020. - 348. - 10.1016/j.electacta.2020.136288
URI
https://www.doi.org/10.1016/j.electacta.2020.136288
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https://openrepository.mephi.ru/handle/123456789/21637
https://www.scopus.com/record/display.uri?eid=2-s2.0-85084191912&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000536481700009
https://openrepository.mephi.ru/handle/123456789/21637