Issue 33, 2010

An improved version of the Kornyshev-Eigen-Wicke model for the diffuse double layer in concentrated electrolytes

Abstract

The Kornyshev-Eigen-Wicke model for the diffuse double layer in concentrated electrolytes has been improved in two ways. First, the role of the compressibility factor a0 has been included in the expressions for the electrochemical potentials of the component ions. As a result this quantity also appears in the equations for the potential drop across the diffuse layer, and its differential capacity. Second, an estimate is made of the ion atmosphere effect using the reciprocal of the thickness of the ionic atmosphere. It is shown that these changes result in considerable improvement in the estimates of the diffuse layer potential drop and differential capacity on the basis of Monte Carlo data.

Graphical abstract: An improved version of the Kornyshev-Eigen-Wicke model for the diffuse double layer in concentrated electrolytes

Article information

Article type
Paper
Submitted
24 Feb 2010
Accepted
30 Apr 2010
First published
22 Jun 2010

Phys. Chem. Chem. Phys., 2010,12, 9816-9821

An improved version of the Kornyshev-Eigen-Wicke model for the diffuse double layer in concentrated electrolytes

W. R. Fawcett and P. J. Ryan, Phys. Chem. Chem. Phys., 2010, 12, 9816 DOI: 10.1039/C003549A

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