Abstract
Using the extended Langmuir's method, we derived the relation of surface potential, potential midway, and the plate distance for asymmetric electrolytes in the case of high constant surface potential. Thus, we obtained an approximate expression of the interaction force and energy between two similar plates for asymmetric electrolytes at constant surface potential. It is found that this approximation works quite well for small plate separations for asymmetric electrolytes at high surface potentials.
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