Planar electric double layer for a restricted primitive model electrolyte at low temperatures.
Monte Carlo simulation and the modified Poisson-Boltzmann theory are used to investigate the planar electric double layer for a restricted primitive model electrolyte at low temperatures. Capacitance as a function of temperature at low surface charge is determined for 1:1, 2:2, 2:1, and 3:1 electrolytes. Negative adsorption can occur for 1:1 electrolytes at low surface charge with low electrolyte concentration. The 1:1 electrolyte diffuse layer potential as a function of surface charge displays a maximum at low densities. At high densities, the diffuse layer potential is negative with a negative slope. The Gouy-Chapman-Stern theory fails in this low-temperature regime, whereas the modified Poisson-Boltzmann theory is fairly successful in this regard.
Bhuiyan
L B
LB
Laboratory of Theoretical Physics, Department of Physics, University of Puerto Rico, San Juan 00931-3343, Puerto Rico. beena.beena.cnnet.clu.edu
Outhwaite
C W
CW
Henderson
D
D