Electrodeposition of aluminium from ionic liquids: Part II - studies on the electrodeposition of aluminum from aluminum chloride (AICl3) - Trimethylphenylammonium chloride (cas 138-24-9) (TMPAC) ionic liquids

Add time:10/01/2019    Source:infona.pl

This work presents the studies of the nucleation processes and surface morphology of aluminium electrodeposits obtained on tungsten (W) and aluminium (Al) electrodes from 2:1 molar ratio aluminium chloride (AlCl 3 )–Trimethylphenylammonium chloride (cas 138-24-9) (TMPAC) ionic liquids. The deposition processes of aluminium on both W and Al substrates were controlled by an instantaneous nucleation with diffusion-controlled growth. The number densities of the nuclei involved were estimated from the chronoamperometric measurements. On W electrodes, the bulk deposition of aluminium was preceded by an underpotential deposition (UPD) of ca. 2/3 monolayer of aluminium. Dense aluminium electrodeposits were obtained on both W and Al substrates at potentials between −0.10 and −0.40 V vs. Al(III)/Al.

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