MODELING TRANSFORMATION PROCESSES IN UNDERPOTENTIAL LEAD ADSORBATE ONAG(111)

The transformation processes at low coverage of lead underpotential ad sorbate on quasi-perfect (111) faces of silver single crystals are dis cussed in view of the influence of the atomic surface relief on the pr ocess kinetics. The results are compared with those on real silver ele ctrodes. A conclusion is made that on quasi-perfect electrodes the tra nsformation processes take place Predominantly on the atomically smoot h terraces while on real electrodes these processes:occur both on the terraces and at the steps of the surface. This effect is explained to be due to the different step density on the electrode surfaces studied .