The capacitance of the solvent primitive model double layer at low effective temperatures

D. Boda, Douglas Henderson

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The effect of the solvent, modeled as a hard sphere fluid, on the behavior of the double layer at low temperatures is studied by means of Monte Carlo simulations. We find that the density profiles are strongly affected by the addition of solvent molecules. The profiles pass from near monotonic functions that exhibit partial drying to oscillatory functions that exhibit partial wetting as the bulk density of the solvent is increased in the system. However, the capacitance, as in the case of the primitive model, increases at low effective temperatures, while after a maximum it decreases at higher effective temperatures as the temperature increases. We find that the adsorption of the ions decreases and changes sign from positive to negative with the decreasing temperature at low electrode charges. Some of these features can be explained by means of a contact value theorem.

Original languageEnglish
Pages (from-to)8934-8938
Number of pages5
JournalThe Journal of Chemical Physics
Volume112
Issue number20
Publication statusPublished - May 22 2000

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Capacitance
capacitance
Temperature
temperature
profiles
drying
wetting
theorems
Wetting
Drying
adsorption
electrodes
fluids
Ions
Adsorption
Electrodes
Molecules
Fluids
molecules
ions

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

The capacitance of the solvent primitive model double layer at low effective temperatures. / Boda, D.; Henderson, Douglas.

In: The Journal of Chemical Physics, Vol. 112, No. 20, 22.05.2000, p. 8934-8938.

Research output: Contribution to journalArticle

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