Tuesday, June 11, 2013

1306.1949 (Ervin Kaminski Lenzi et al.)

A connection between anomalous Poisson-Nernst-Planck models and
equivalent circuits with constant--phase elements

Ervin Kaminski Lenzi, Jamile Lorena de Paula, Fernanda R. G. B. Silva, Luiz Roberto Evangelista
A connection between the impedance spectroscopy response of anomalous Poisson-Nernst-Planck (PNPA) diffusional models and of equivalent circuits containing constant phase elements (CPE) is established for a typical electrolytic cell. The analysis is carried out in the limit of low frequency in order to highlight the surface effects and to explore how they can be connected to the presence of CPE in the circuit. It is shown that, depending on the choice of the equivalent circuit, the action of these elements can be the same as the one obtained by using integro-differential boundary conditions to describe anomalous diffusive processes in the framework of PNPA models. The predictions are also compared with an experimental data obtained from an electrolytic solution.
View original: http://arxiv.org/abs/1306.1949

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