Journal
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 24, Issue 11-12, Pages 2833-2846Publisher
SPRINGER
DOI: 10.1007/s10008-020-04626-x
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Funding
- Israel Council for Higher Education (CHE)
- Israel Fuel Choice Initiative of Israel National Research Center for Electrochemical Propulsion (INREP)
- Israel Fuel Choice Initiative of Grand Technion Energy Program (GTEP)
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Electrodeposition of aluminum (Al) from an organic non-aqueous electrolyte of ethylbenzene containing aluminum bromide is demonstrated. It is offered as a simple method for the preparation of Al coatings. This work employs distinct electrochemical techniques and explores the effects of the experimental parameters on the kinetics of the process and the quality of the final coatings. The process presented here enables deposition of pure and crystalline Al at room temperature and facilitates the production of uniform Al coatings on various metallic substrates. Morphological studies establish that the growth of Al deposits follows an island mode, and thus, the most noteworthy effect of the substrate over the morphology of the deposits originates from its impact over the nucleation stage, and the density of islands. This study is complemented by theoretical modeling for the adsorption of Al atoms at the different surfaces. Corrosion evaluation determines the dissolution mechanisms of each of the studied substrates in the examined electrolyte. These findings further corroborate the claim that this electrolyte enables the reversible electrodeposition of Al.
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