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| - Series Approach to Modeling Ion Size Effects for Symmetric Electrolytes in the DiffuseDouble Layer
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| - An analytical model is developed for the potential drop and differential capacity across the diffuse layerwhich considers the effects of ion size on these properties. For symmetric electrolytes, this potential drop isexpressed in terms of a cubic polynomial in the corresponding estimate in the Gouy−Chapman theory. Optimalpolynomial coefficients and model validation for 1:1 and 2:2 electrolytes are provided by fits of Monte Carlodata obtained for a restricted electrolyte in a primitive solvent. Simple relationships between these coefficientsand parameters commonly associated with the mean spherical approximation are obtained. It is shown thatthe series approach accurately describes potential drops and differential capacities of the diffuse layer for 1:1and 2:2 electrolytes for the chosen assumptions.
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