Electrodeposition of transition metals from highly concentrated solutions of ionic liquids

摘要: Abstract Five different ionic liquids (ILs), obtained by dissolving bistriflimide salts of Ag, Cu, Co, Ni and zinc in 1-butyl-3-methylimidazolium ([bmim][Tf 2 N]) were synthesized electrochemically characterized means cyclic voltammetry chronoamperometry. Silver-bearing IL represents the simplest electrochemical system since silver is present as uncoordinated or weakly coordinated Ag + ions. Homogeneous crack-free coatings potentiostatically from this liquid nucleation growth mechanism determined. In contrast, copper–cobalt- zinc-bearing systems highly moisture sensitive. The presence large amounts water changes nature coordination species solution, facilitating electroreduction metal complexes. However, hydrated solutions we observe simultaneous hydrogen evolution, which impairs investigation mechanism. Nevertheless, metallic deposits their morphologies investigated a function deposition potential content. Conversely, within window, Ni-bearing does not form electroactive species.