Influence of the substrate's surface structure on the mechanism and kinetics of the electrochemical UPD formation of a copper monolayer on gold

The potentiostatic current transients and the role of local diffusion fields in formation of the 2D lead dendrites from the concentrated electrolyte

“…The shape of the potentiostatic current transients clearly indicates on the absence of the some other contributions to the overall current apart from the 3D nucleation contribution. This shape of the current transients differed from those recorded during nucleation of Ag from the ammonium electrolyte [30], Cu [31,32] and Co [33], in which the contributions to the overall current indentified as the 2D (two-dimensional) nucleation and growth limited by the lattice incorporation, or due to adsorption processes were observed. The differences between these current transients and those characteristic for Pb can be ascribed to the different electrochemical (kinetic) characteristics of these metals.…”

2D Materials‐based Platforms for Electroanalysis Applications

“…UPD has been used for electrodeposition of metals, such as Cu on Au(111) and onto Au nanoparticles . In order to study the initial stages of the formation and growth of metal it is important to understand the influence of the substrate's structure on the mechanism and kinetics of the monolayer formation, which entail the formation of a new 2D phase growing on the surface of the substrate .…”

“…To define and characterize the mechanism and kinetics involved during the deposition process in quantitative way traditional electrochemical techniques such as potentiostatic current transient measurements can be used . It offers a significant advantage since the obtained data is easily interpreted with the aid of several theoretical models developed for this purpose.…”

Effects of anions on the underpotential deposition behavior of Cu on polycrystalline Pt

“…2f) (hypothesizing the theoretical charge density needed to form a full Cu monolayer of 420 mC cm À2 ), which is similar to that of Cu UPD on polycrystalline Au. 25 The differences in q between the (bi)sulfate and perchlorate (with or without Cl À ) systems may synchronously result from the following factors:…”

“…45,46 According to the BFT model, the nucleation/growth current densities of 2D instantaneous nucleation (2Di-Li) and 2D progressive nucleation (2Dp-Li) are given by the following equations, respectively. 25,45,46…”