Electrodeposition in Ionic Liquids

Abstract

Due to their attractive physico-chemical properties, ionic liquids (ILs) are increasingly used as deposition electrolytes. This review summarizes recent advances in electrodeposition in ILs and focuses on its similarities and differences with that in aqueous solutions. The electrodeposition in ILs is divided into direct and template-assisted deposition. We detail the direct deposition of metals, alloys and semiconductors in five types of ILs, including halometallate ILs, air- and water-stable ILs, deep eutectic solvents (DESs), ILs with metal-containing cations, and protic ILs. Template-assisted deposition of nanostructures and macroporous structures in ILs is also presented. The effects of modulating factors such as deposition conditions (current density, current density mode, deposition time, temperature) and electrolyte components (cation, anion, metal salts, additives, water content) on the morphology, compositions, microstructures and properties of the prepared materials are highlighted.

Robust Aluminum Electrodeposition from Ionic Liquid Electrolytes Containing Light Aromatic Naphta as Additive

“…Metal electroplating from ionic liquids, eutectic formulations and molten salts has been extensively studied in the last years . These non‐aqueous solutions have gained interest because of their non‐volatility and inflammability, good solubility, high stability and their wide electrochemical window .…”

Utilising solution dispersed platinum nanoparticles to direct the growth of electrodeposited platinum nanostructures and its influence on the electrocatalytic oxidation of small organic molecules

“…The electrochemical formation of nanostructured materials is a relatively mature field, however, there are consistently new methods and strategies being reported that allow excellent control over composition, size, shape and exposed crystal facets [1][2][3][4][5][6][7]. This is particularly useful given the critical role the aforementioned properties play in electrocatalysis, photocatalysis, surface enhanced Raman spectroscopy and electroanalytical chemistry.…”

“…1ashows linear sweep voltammograms for the electroreduction of PtCl6 2− ions in the absence (black line) and presence (red line) of Pt nanoparticles. In the absence of nanoparticles in the electrolyte, two distinct reduction peaks are observed at ca.…”

Electroplating for Decorative Applications: Recent Trends in Research and Development

“…Although both of these techniques are very promising and are strongly pursued in laboratories worldwide, their use on a large scale is still limited. Ionic liquids are mainly used to deposit metals with a Nernst potential below that of water decomposition and, therefore, cannot be electroplated from aqueous baths [37][38][39]. The most common example is the electrodeposition of aluminum.…”