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Electrodeposition of aluminium from room temperature AlCl3-TMPAC molten salts

✍ Scribed by Yuguang Zhao; T.J. VanderNoot

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 498 KB
Volume: 42
Category: Article
ISSN: 0013-4686
DOI: 10.1016/s0013-4686(96)00271-x

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✦ Synopsis

The aluminium deposition processes on tungsten electrodes were investigated in a room temperature molten salt (aluminium chloride + trimethylphenylammonium chloride), using cyclic voltammetry and chronoamperometry.

In melts with 2:l mole ratio, the reduction of A12Cl; ions was quasi-reversible and involved a nucleation and growth mechanism. Underpotential deposition of aluminium, corresponding to several monolayers, was also observed. Chronoamperometric analysis showed that the deposition of aluminium was instantaneous three-dimensional nucleation with hemispherical diffusion-controlled growth.

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