A rapidly convergent series for calculation of the interaction between two similar plane double layers for Na(2)SO(4) type asymmetric electrolytes at positive surface potential.
A rapidly convergent series for calculation of the interaction energies between two similar plane double layers for Na(2)SO(4) type asymmetric electrolytes at positive surface potential was obtained by introducing a parameter lambda into an elliptical integral. When the dimensionless surface potential is less or equal to 20, the number of the series terms required to obtain the interaction energies with six significant digits is not more than 2. The accurate numeral results were given and they can be used to check up the validity of approximate expressions obtained. The present results are also fit for CaCl(2) type asymmetric electrolytes at negative surface potential.
Zhang
Shimin
S
College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, China. gss.@csu.edu.cn