Work

Electric double layer in ionic liquids: A result of interplay between coupling effects and phase demixing

Year: 2024

Type: article

Abstract: 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 nonconventional 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. Published by the American Physical Society 2024

Source: Physical Review Research

DOI: 10.1103/physrevresearch.6.033026

Authors: YeongKyu Lee, JunBeom Cho, Yongkyu Lee, Won Bo Lee, YongSeok Jho

Institutions: Korea Institute for Advanced Study, Gyeongsang National University, Seoul National University

Language: English

Topic: Electrostatics and Colloid Interactions

Subfield: Physical and Theoretical Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funders: National Research Foundation, National Research Foundation of Korea, Ministry of Science and ICT, South Korea