Electric Double Layer from Phase Demixing Reinforced by Strong Coupling Electrostatics

Fuente: arXiv
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Auteurs principaux: Lee, YeongKyu, Cho, JunBeom, Lee, Yongkyu, Lee, Won Bo, Jho, YongSeok
Format: Preprint
Publié: 2023
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author Lee, YeongKyu
Cho, JunBeom
Lee, Yongkyu
Lee, Won Bo
Jho, YongSeok
author_facet Lee, YeongKyu
Cho, JunBeom
Lee, Yongkyu
Lee, Won Bo
Jho, YongSeok
contents Ionic liquids (ILs) are appealing electrolytes for their favorable physicochemical properties. However, despite their longstanding use, understanding the capacitive behavior of ILs remains challenging. This is largely due to the formation of a non-conventional electric double layer (EDL) at the electrode-electrolyte interface. This study shows that the short-range Yukawa interactions, representing the large anisotropically charged ILs, demix IL to create a spontaneous surface charge separation, which is reinforced by the strongly coupled charge interaction. The properties of the condensed layer, the onset of charge separation, and the rise of overscreening and crowding critically depend on the asymmetry of Yukawa interactions.
format Preprint
id arxiv_https___arxiv_org_abs_2401_00116
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Electric Double Layer from Phase Demixing Reinforced by Strong Coupling Electrostatics
Lee, YeongKyu
Cho, JunBeom
Lee, Yongkyu
Lee, Won Bo
Jho, YongSeok
Soft Condensed Matter
Ionic liquids (ILs) are appealing electrolytes for their favorable physicochemical properties. However, despite their longstanding use, understanding the capacitive behavior of ILs remains challenging. This is largely due to the formation of a non-conventional electric double layer (EDL) at the electrode-electrolyte interface. This study shows that the short-range Yukawa interactions, representing the large anisotropically charged ILs, demix IL to create a spontaneous surface charge separation, which is reinforced by the strongly coupled charge interaction. The properties of the condensed layer, the onset of charge separation, and the rise of overscreening and crowding critically depend on the asymmetry of Yukawa interactions.
title Electric Double Layer from Phase Demixing Reinforced by Strong Coupling Electrostatics
topic Soft Condensed Matter
url https://arxiv.org/abs/2401.00116