Adsorption and Electrode Processes

Abstract

In order to understand a whole electrode processes, it is important to analyze not only the adsorbed molecules on a substrate but also a series of dynamic processes like diffusion, convection, and self-exchange reaction of reacting species. Several types of adsorption isotherms (e.g. Langmuir-, Fraundlich-, Temkin type, etc.) are introduced and applied for elementary processes in direct methanol fuel cells (DMFCs). The mechanism of selective oxygen reduction on platinum by the adsorption of 2,2′-bipyridine is studied by Monte Carlo simulation. Using a slab optical waveguide (SOWG), the properties of functional materials at a solid and liquid interface are elucidated. A digital simulation method based on finite differential methods is applied to electrochemical measurements, i.e., static and dynamic voltammograms and potential-step method, which proves to be a powerful tool for the investigation of electrode processes.