Dielectric Mismatch Effects on Polyelectrolyte Solutions in Electrified Nanopores: Insights from Mean-Field Theory

Yu. A. Budkov; Будков Ю. А.; N. N. Kalikin; Каликин Н. Н.

doi:10.31857/S230811472370022X

Dielectric Mismatch Effects on Polyelectrolyte Solutions in Electrified Nanopores: Insights from Mean-Field Theory

Authors: Budkov Y.A.¹^,2, Kalikin N.N.¹^,2
Affiliations:
1. Laboratory of Computational Physics, HSE University
2. .A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences
Issue: Vol 65, No 1 (2023)
Pages: 51-58
Section:
URL: https://journals.rcsi.science/2308-1147/article/view/139213
DOI: https://doi.org/10.31857/S230811472370022X
EDN: https://elibrary.ru/JTUJNY
ID: 139213

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Abstract
About the authors
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Abstract

We utilize the self-consistent field theory to explore the mechanical and electrical properties of charged surfaces immersed in polyelectrolyte solutions that could be potentially useful for electrochemical applications. Our research focuses on how the dielectric heterogeneity of the solution could affect the disjoining pressure and differential capacitance of the electric double layer. Relying on the developed theoretical framework, based on the Noether’s theorem, we calculate the stress tensor, containing the term, arising from the conformational entropy of the polymer chains. With its help we compute the disjoining pressure in polyelectrolyte solution confined between two parallel charged surfaces and analyze its behavior as a function of separation between the surfaces for different values of dielectric mismatch parameter. We also calculate the differential capacitance of the electric double layer and discuss how dielectric heterogeneity of the polyelectrolyte solution influences its values.

About the authors

Yu. A. Budkov

Laboratory of Computational Physics, HSE University; .A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences

Email: ybudkov@hse.ru
123458, Moscow, Russia; 153045, Ivanovo, Russia

N. N. Kalikin

Laboratory of Computational Physics, HSE University; .A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences

Author for correspondence.
Email: ybudkov@hse.ru
123458, Moscow, Russia; 153045, Ivanovo, Russia

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