Double layer capacitance and a microscopic structure of electrified liquid-liquid interfaces

L. I. Daikhin, M. Urbakh*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

We develop a theory of the double layer at electrolyte-electrolyte interfaces taking in to account the microscopic structure of the interfacial region. This includes a "mixed boundary layer" where the overlapping of two space-charge regions occurs, and the effects of ion association and adsorption at the interface. Theoretical results are in good agreement with experimental data obtained for various organic solvents and electrolytes. The theory suggests a framework for the treatment of the capacitance data and establishes a relationship between experimental results and the microscopic structure of interfaces between two immiscible electrolyte solutions (ITIES).

Original languageEnglish
Pages (from-to)59-67
Number of pages9
JournalJournal of Electroanalytical Chemistry
Volume560
Issue number1
DOIs
StatePublished - 1 Dec 2003

Funding

FundersFunder number
Israel Science Foundation573/00

    Keywords

    • Capacitance
    • Ion pair interactions
    • Ion penetration
    • Liquid-liquid interfaces

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