On the theory of electric double layer with explicit account of a polarizable co-solvent

Yu. A. Budkov; A. L. Kolesnikov; M. G. Kiselev

doi:10.1063/1.4948634

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arXiv · 1602.04986

On the theory of electric double layer with explicit account of a polarizable co-solvent

Yu. A. Budkov·A. L. Kolesnikov·M. G. Kiselev

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Abstract

We present a continuation of our theoretical research into the influence of co-solvent polarizability on a differential capacitance of the electric double layer [EPL 111, 28002 (2015)]. We formulate a modified Poisson-Boltzmann theory, using the formalism of density functional approach on the level of local density approximation taking into account the electrostatic interactions of ions and co-solvent molecules as well as their excluded volume. We derive the modified Poisson-Boltzmann equation, considering the three-component symmetric lattice gas model as a reference system and minimizing the grand thermodynamic potential with respect to the electrostatic potential. We apply present modified Poisson-Boltzmann equation to the electric double layer theory.

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Yu. A. Budkov, A. L. Kolesnikov, M. G. Kiselev. 2016-05-10. On the theory of electric double layer with explicit account of a polarizable co-solvent. https://doi.org/10.1063/1.4948634

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