We present chronocoulometry experiments and equilibrium Monte Carlo simulations for the electrosorption of Br and Cl on Ag(100) single-crystal electrode surfaces. Two different methods are used to calculate the long-range part of the adsorbate-adsorbate interactions. The first method is a truncated-sum approach, while the second is a mean-field-enhanced truncated-sum approach. To compare the two methods, the resulting isotherms are fit to experimental adsorption isotherms, assuming both a constant electrosorption valency &gamma and also a coverage-dependent &gamma. While a constant &gamma fits the Br/Ag(100) well, a coverage-dependent or potential-dependent &gamma is needed for Cl/Ag(100).
@article{arxiv.cond-mat/0211169,
title = {Electrosorption of Br and Cl on Ag(100): Experiments and Computer Simulations},
author = {I. Abou Hamad and Th. Wandlowski and G. Brown and P. A. Rikvold},
journal= {arXiv preprint arXiv:cond-mat/0211169},
year = {2007}
}