The DOI matches its Crossref record; 60 of the 60 references it cites were found in a registry or an index.
Underscreening in concentrated electrolytes
Open accessAbstract
Screening of a surface charge by an electrolyte and the resulting interaction energy between charged objects is of fundamental importance in scenarios from bio-molecular interactions to energy storage. The conventional wisdom is that the interaction energy decays exponentially with object separation and the decay length is a decreasing function of ion concentration; the interaction is thus negligible in a concentrated electrolyte. Contrary to this conventional wisdom, we have shown by surface force measurements that the decay length is an increasing function of ion concentration and Bjerrum length for concentrated electrolytes. In this paper we report surface force measurements to test directly the scaling of the screening length with Bjerrum length. Furthermore, we identify a relationship between the concentration dependence of this screening length and empirical measurements of activity coefficient and differential capacitance. The dependence of the screening length on the ion concentration and the Bjerrum length can be explained by a simple scaling conjecture based on the physical intuition that solvent molecules, rather than ions, are charge carriers in a concentrated electrolyte.
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“Although this trend contradicts the prediction by DH theory, it has been reported by earlier studies on highly concentrated solutions [9,22,23].”
From Effect of Hofmeister Anions on Interfacial Properties of Mica Surface in Concentrated Aqueous Solution (2020) · cites this paper as [22]
Citations
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Cited by
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Understanding specific ion effects and the Hofmeister series
Gregory, K. P., Elliott, G. R., Robertson, H., Kumar, A., Wanless, E. J., Webber, G. B., Craig, V. S. J., Andersson, G. G., & Page, A. J. (2022) · Physical Chemistry Chemical Physics · doi:10.1039/d2cp00847e · Cited by 490
Ionic liquids as electrolytes for energy storage applications – A modelling perspective
Jónsson, E. (2019) · Energy storage materials · doi:10.1016/j.ensm.2019.08.030 · Cited by 154
Interfacial Layering in the Electric Double Layer of Ionic Liquids
de Souza, J. P., Goodwin, Z. A. H., McEldrew, M., Kornyshev, A. A., & Bazant, M. Z. (2020) · Physical Review Letters · doi:10.1103/physrevlett.125.116001 · Cited by 127
Free and Bound States of Ions in Ionic Liquids, Conductivity, and Underscreening Paradox
Feng, G., Chen, M., Bi, S., Goodwin, Z. A. H., Postnikov, E. B., Brilliantov, N. V., Urbakh, M., & Kornyshev, A. A. (2019) · Physical Review X · doi:10.1103/physrevx.9.021024 · Cited by 113
Underscreening, overscreening and double-layer capacitance
Goodwin, Z. A. H., & Kornyshev, A. A. (2017) · Electrochemistry Communications · doi:10.1016/j.elecom.2017.07.008 · Cited by 105
Metadata
- Authors
- Lee, A. A., Perez-Martinez, C. S., Smith, A. M., & Perkin, S.
- Affiliations
- Harvard University (US)
- University of Oxford (GB)
- University of Geneva (CH)
- Corresponding author
- Lee, Alpha A.
- Perkin, Susan
- Venue
- Faraday Discussions
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2017
- Volume
- 199
- Pages
- 239-259
- ISSN
- 1359-6640 (ISSN-L)
- 1364-5498
- OpenAlex
- W2580724977
- Cited by
- 175
- References
- 60
- Citations by year
- 2026: 11 · 2025: 18 · 2024: 23 · 2023: 19 · 2022: 23 · 2021: 16 · 2020: 19 · 2019: 19 · 2018: 21 · 2017: 6
- FWCI
- 13.08
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Faraday Discussions (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Funders
- H2020 European Research Council (676861)
- Leverhulme Trust (RPG-2015-328)
- Topics
- Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Electrostatics and Colloid Interactions
- Physical Sciences › Chemical Engineering › Filtration and Separation › Membrane-based Ion Separation Techniques
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Chemical and Physical Studies
- Keywords
- underscreening, concentrated electrolytes, Bjerrum length, screening length, surface charge, interaction energy, surface force measurement, activity coefficients, differential capacitance, ion concentration dependence
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