Aluminium electrodeposition under ambient conditions
- 2 June 2014
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Physical Chemistry Chemical Physics
- Vol. 16 (28), 14675-14681
- https://doi.org/10.1039/c4cp01508h
Abstract
The electrodeposition of aluminium is demonstrated using a eutectic mixture of aluminium chloride and urea. The mixture is shown to be conducting through the formation of both cationic ([AlCl2·urean]+) and anionic (AlCl4 −) species and electrodeposition is achieved through the cationic species. The use of a biphasic system with the ionic liquid and a protective hydrocarbon layer allows metal deposition to be carried out in an environment with ambient moisture without the need for a glove box. A direct comparison is made between the AlCl3:urea and imidazolium chloride:AlCl3 systems and the differences in speciation and mass transport manifest themselves in different deposit morphologies. Brighteners which work in the chloroaluminate system such as toluene and LiCl are shown to be ineffective in the urea based system and the reasons for these differences are ascribed to the mechanism of the anodic reaction which is rate limiting.Keywords
This publication has 16 references indexed in Scilit:
- Do all ionic liquids need organic cations? Characterisation of [AlCl2·nAmide]+ AlCl4− and comparison with imidazolium based systemsChemical Communications, 2011
- Double layer, diluent and anode effects upon the electrodeposition of aluminium from chloroaluminate based ionic liquidsPhysical Chemistry Chemical Physics, 2009
- Electrodeposition of Nano‐ and Microcrystalline Aluminium in Three Different Air and Water Stable Ionic LiquidsChemphyschem, 2006
- Electrodeposition of Nanocrystalline Metals and Alloys from Ionic LiquidsAngewandte Chemie-International Edition, 2003
- Electrodeposition of aluminium and aluminium/platinum alloys from AlCl3/benzyltrimethylammonium chloride room temperature ionic liquidsJournal of Applied Electrochemistry, 2001
- Electrodeposition of aluminium from nonaqueous organic electrolytic systems and room temperature molten saltsElectrochimica Acta, 1997
- Electrodeposition of Al‐Cr Metallic GlassJournal of the Electrochemical Society, 1994
- Electrochemical Studies of Sodium Chloride as a Lewis Buffer for Room Temperature Chloroaluminate Molten SaltsJournal of the Electrochemical Society, 1990
- Aluminum-electrocrystallization from metal—organic electrolytesElectrochimica Acta, 1989
- Thermodynamic properties of urea+hydrocarbon adducts. Part 1.—Heat capacities of the adducts of n-C10H22, n-C12H26, n-C16CH34and n-C20H42from 12 to 300°KTransactions of the Faraday Society, 1965