The capacitance of the electrical double layer of valence-asymmetric salts at low reduced temperatures

Mónika Valiskó, Douglas Henderson, D. Boda

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The low temperature anomalies in the double layer properties of electrolytes have been observed in recent simulations and reproduced by a number of theoretical methods. This anomaly means that the capacitance of the electrical double layer increases with increasing reduced temperature when the reduced temperature is small, while the behaviour is the reversed at high reduced temperatures. In this paper, we give a concise overview of Monte Carlo simulation results for a 1:1 electrolyte together with the results of various theories such as the Gouy-Chapman theory, various versions of the mean spherical approximation, density functional theories, the modified Poisson-Boltzmann theory, and a field theoretical approach. We report our simulation results for the reduced temperature dependence of the capacitance of 2:1 and 3:1 electrolytes. Finally, we investigate the effect of a concentration dependent dielectric constant by means of a Parsons-Zobel plot.

Original languageEnglish
Pages (from-to)179-184
Number of pages6
JournalJournal of Molecular Liquids
Volume131-132
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - Mar 15 2007

Fingerprint

Capacitance
Salts
capacitance
electrolytes
salts
valence
Electrolytes
anomalies
simulation
Temperature
temperature
plots
permittivity
density functional theory
temperature dependence
Density functional theory
approximation
Permittivity

Keywords

  • Capacitance
  • Electrical double layer
  • Valence asymmetric

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Atomic and Molecular Physics, and Optics

Cite this

The capacitance of the electrical double layer of valence-asymmetric salts at low reduced temperatures. / Valiskó, Mónika; Henderson, Douglas; Boda, D.

In: Journal of Molecular Liquids, Vol. 131-132, No. SPEC. ISS., 15.03.2007, p. 179-184.

Research output: Contribution to journalArticle

Valiskó, Mónika ; Henderson, Douglas ; Boda, D. / The capacitance of the electrical double layer of valence-asymmetric salts at low reduced temperatures. In: Journal of Molecular Liquids. 2007 ; Vol. 131-132, No. SPEC. ISS. pp. 179-184.
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