Lattice-Gas Models of Adsorption in the Double Layer

P. A. Rikvold; J. Zhang; Y. -E. Sung; A. Wieckowski

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Lattice-Gas Models of Adsorption in the Double Layer

P. A. Rikvold·J. Zhang·Y. -E. Sung·A. Wieckowski

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Abstract

The theory of statistical-mechanical lattice-gas modeling of adsorption is reviewed and shown to be applicable to a range of electrochemical problems dominated by effective, lateral adsorbate--adsorbate interactions. A general strategy for applying the method to specific systems is outlined, which includes microscopic model formulation, calculation of zero-temperature phase diagrams, numerical calculation of thermodynamical and structural quantities at nonzero temperatures, and estimation of effective, lateral interaction energies that cannot be obtained by first-principles methods. Phenomena that are discussed include poisoning and enhanced adsorption, and illustrative applications to specific systems are reviewed. Particular problems considered are: the poisoning by sulfur of hydrogen adsorption on platinum (111), the electrochemical adsorption of naphthalene on polycrystalline copper and of urea on single-crystal platinum (100), and the underpotential deposition of copper on single-crystal gold (111).

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P. A. Rikvold, J. Zhang, Y. -E. Sung, A. Wieckowski. 1995-06-06. Lattice-Gas Models of Adsorption in the Double Layer. https://arxiv.org/abs/cond-mat/9506025

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