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@article{de:2022:10.1021/acs.jpcb.1c09441,
author = {de, Souza JP and Pivnic, K and Bazant, MZ and Urbakh, M and Kornyshev, AA},
doi = {10.1021/acs.jpcb.1c09441},
journal = {The Journal of Physical Chemistry B: Biophysical Chemistry, Biomaterials, Liquids, and Soft Matter},
pages = {1242--1253},
title = {Structural forces in ionic liquids: the role of ionic size asymmetry},
url = {http://dx.doi.org/10.1021/acs.jpcb.1c09441},
volume = {126},
year = {2022}
}

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TY  - JOUR
AB  - Ionic liquids (ILs) are charged fluids composed of anions and cations of different size and shape. The ordering of charge and density in ILs confined between charged interfaces underlies numerous applications of IL electrolytes. Here, we analyze the screening behavior and the resulting structural forces of a representative IL confined between two charge-varied plates. Using both molecular dynamics simulations and a continuum theory, we contrast the screening features of a more-realistic asymmetric system and a less-realistic symmetric one. The ionic size asymmetry plays a nontrivial role in charge screening, affecting both the ionic density profiles and the disjoining pressure distance dependence. Ionic systems with size asymmetry are stronger coupled systems, and this manifests itself both in their response to the electrode polarization and spontaneous structure formation at the interface. Analytical expressions for decay lengths of the disjoining pressure are obtained in agreement with the pressure profiles computed from molecular dynamics simulations.
AU  - de,Souza JP
AU  - Pivnic,K
AU  - Bazant,MZ
AU  - Urbakh,M
AU  - Kornyshev,AA
DO  - 10.1021/acs.jpcb.1c09441
EP  - 1253
PY  - 2022///
SN  - 1520-5207
SP  - 1242
TI  - Structural forces in ionic liquids: the role of ionic size asymmetry
T2  - The Journal of Physical Chemistry B: Biophysical Chemistry, Biomaterials, Liquids, and Soft Matter
UR  - http://dx.doi.org/10.1021/acs.jpcb.1c09441
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000766187200010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR  - https://pubs.acs.org/doi/10.1021/acs.jpcb.1c09441
UR  - http://hdl.handle.net/10044/1/101978
VL  - 126
ER  -

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