Electro-deposition of aluminium in non-aqueous solvents

Garai, Tibor

doi:10.1016/0254-0584(83)90062-7

Cited by 7 publications

(7 citation statements)

References 62 publications

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“…Considering nonionic liquid electrolytes, ethers have shown promise as possible organic solvents for nonaqueous electrolyte systems due to their strong Lewis basicity and high donor numbers. Ever since Couch and Brenner revealed the possibility of electrodepositing metallic aluminum from a hydride bath that consisted of a mixture of AlCl 3 and LiAlH 4 in 1952, there have been considerable efforts to electrodeposit aluminum from organic solvents. − In addition, significant ionic conductivities of such systems have been reported making ethereal electrolytes an important candidate for aluminum ion batteries. − …”

Section: Introductionmentioning

confidence: 99%

Comparing Computational Predictions and Experimental Results for Aluminum Triflate in Tetrahydrofuran

Slim

Menke

2020

J. Phys. Chem. B

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Exploring reliable electrolytes for aluminum ion batteries requires an in-depth understanding of the behavior of aluminum ions in ethereal-organic solvents. Electrolytes comprised of aluminum trifluoromethanesulfonate (Al-triflate) in tetrahydrofuran (THF) were investigated computationally and experimentally. Optimized geometries, redox potentials, and vibrational frequencies of species likely to be present in the electrolyte were calculated by density functional theory and then measured spectroscopically and electrochemically. Aluminum appears to be electrochemically active in THF with a reduction onset near 0 V versus Al/Al 3+ . Spectroscopic measurements reveal explicit evidence for the presence of two concentrationdependent ionic environments for the triflate anions, namely, outer-shell ligands and Al-bound triflates. Additionally, ionic conductivities of ∼2.5 mS/cm were measured for these electrolytes ∼0.8M.

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Section: Introductionmentioning

confidence: 99%

Comparing Computational Predictions and Experimental Results for Aluminum Triflate in Tetrahydrofuran

Slim

Menke

2020

J. Phys. Chem. B

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“…Other investigators studied organometallic aluminum corn-pounds (7) or used aromatic solvents (8). At present, a considerable amount of work is being conducted on the development of aluminum plating solutions (9)(10)(11).…”

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confidence: 99%

The Mechanism of Aluminum Electrodeposition from Solutions of AlCl3 and LiAlH4 in THF

Graef

1985

J. Electrochem. Soc.

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Aluminum coatings on metallic substrates can be made by electrodeposition from a nonaqueous solution such as LiAlH4 and AlCl3 dissolved in tetrahydrofuran. Raman spectroscopy has been used to identify the chemical constituents of the plating bath. A quantitative analysis of the equilibrium composition is given. The electrode reactions have been studied by means of chronoamperometry. The catalytic behavior of hydride and the role of neutral and ionic aluminum containing species in the faradaic and chemical processes are elucidated. The influence of variations in the composition of the solution on the properties of the plating bath is explained in terms of the mechanism of the electrodeposition process.

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“…Results from eq 2 suggest that the absorbed complex is AlCl 3 иEt 2 O, which is described in the literature (6). This entity is stabilized in the Papyex porosity with little ether solvation.…”

Section: Composition Of the Absorbed Speciesmentioning

confidence: 89%

“…The dissolution of the aluminum trichloride in diethylether is very exothermic. In this organic medium, a monomerization occurs: n AlCl 3 (AlCl 3 ) n An auto-ionization and a complexation of AlCl 3 then takes place in agreement with a Lewis acid-base reaction (6), which can be presented by either of the following reactions:…”

Section: Study Of the Exfoliated-compressed Materialsmentioning

confidence: 97%