Studies on the AlCl3/dimethylsulfone (DMSO2) electrolytes for the aluminum deposition processes

Jiang, Tianyue; Brym, Markus; Dubé, G.; Lasia, Andrzej; Brisard, Gessie

doi:10.1016/j.surfcoat.2006.11.035

Cited by 135 publications

(183 citation statements)

References 30 publications

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“…The WE was then polarized between 1.0V and 2.0V (vs. Pt-RE) with a scan rate of 0.1 Vs -1 to remove adsorbed impurities [6]. …”

Section: Methodsmentioning

confidence: 99%

“…However, Al coatings cannot be electrodeposited in an aqueous solution because water decomposes prior to Al deposition. Room temperature ionic liquids (RTIL) have many unique features such as low vapor pressure, good ionic conductivity and a wide electrochemical potential window, and they have recently been considered as media for Al electrodeposition [5][6]. One of the ionic liquids used for electrodeposition of Al is a mixture of 1-ethyl-3-methyl-imidazolium chloride (EMIC) and aluminum chloride (AlCl 3 ), from which various metals and alloys, such as Al, Al-Zn [7], Al-MoTi [8], and even AlInSb semiconductor [9], have been electrodeposited.…”

Section: Introductionmentioning

confidence: 99%

“…One of the ionic liquids used for electrodeposition of Al is a mixture of 1-ethyl-3-methyl-imidazolium chloride (EMIC) and aluminum chloride (AlCl 3 ), from which various metals and alloys, such as Al, Al-Zn [7], Al-MoTi [8], and even AlInSb semiconductor [9], have been electrodeposited. In this acidic ionic liquid, it has been suggested that the dominant ions of Al 2 Cl 7 -are electrochemically reduced to form metallic deposits according to the following reaction [6]:…”

Section: Introductionmentioning

confidence: 99%

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Optimization of pulsed electrodeposition of aluminum from AlCl3-1-ethyl-3-methylimidazolium chloride ionic liquid

Tang

Azumi

2011

Electrochimica Acta

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In this study, Al was electrodeposited on a platinum substrate at room temperature from an ionic liquid bath of EMIC containing AlCl 3 using potentiostatic polarization (PP), galvanostatic polarization (GP), monopolar current pulse polarization (MCP) and bipolar current pulse polarization (BCP). Transition of current or potential during galvanostatic or pulse polarization revealed that the initial stage of the deposition process was controlled by a nucleation process depending on the polarization condition. For example, the average size of Al deposits decreased with increasing current density in the case of GP. FE-SEM observation showed that dense and compact Al deposits with a smooth surface were obtained by the current pulse method.Roughness factor evaluated from electrochemical impedance measurement confirmed the smooth surface of these deposits. Adhesion strength of Al deposits was greatly improved by using BCP in which an anodic pulse was combined with a cathodic pulse for electrodeposition.In this study, the optimal parameters for BCP were found to be I C = -16.0 mA cm -2 , I A = 1.0 mA cm -2 , r C (duty ratio) = 0.5, and ƒ = 2 Hz. The mechanisms of electrodeposition by these three methods are discussed.

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“…The WE was then polarized between 1.0V and 2.0V (vs. Pt-RE) with a scan rate of 0.1 Vs -1 to remove adsorbed impurities [6]. …”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimization of pulsed electrodeposition of aluminum from AlCl3-1-ethyl-3-methylimidazolium chloride ionic liquid

Tang

Azumi

2011

Electrochimica Acta

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“…Several researchers have explored the use of chloroaluminate ionic liquids as electrolytes for aluminium batteries [167,178]. One drawback is difficulty with preparation due to the highly exothermic reaction between 1-ethyl-3-methylimidazolium chloride (EMIC), and AlCl 3 , making them expensive [167,179,180]. Other chloroaluminate ionic liquids such as trimethylphenyl ammonium chloride (TMPAC)-AlCl 3 are easy and inexpensive to prepare in a relatively high state of purity since TMPAC is commercially available in high-purity [181].…”

Section: Ionic Liquid Electrolytesmentioning

confidence: 99%

“…Other chloroaluminate ionic liquids such as trimethylphenyl ammonium chloride (TMPAC)-AlCl 3 are easy and inexpensive to prepare in a relatively high state of purity since TMPAC is commercially available in high-purity [181]. The conductivity of the AlCl 3 /EMIC ionic liquids is significantly inferior to that of aqueous solutions at 0.017 S cm À1 [179] compared to 0.7 S cm À1 for 7 mol dm À3 KOH at 30 C [56]. Due to their hygroscopic nature, chloroaluminate ionic liquids must be handled under an inert-gas atmosphere or at least under dry air [25,168,169].…”

Section: Ionic Liquid Electrolytesmentioning

confidence: 99%

Developments in electrode materials and electrolytes for aluminium–air batteries

Egan¹,

León²,

Wood³

et al. 2013

Journal of Power Sources

394

191

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h i g h l i g h t s< Discussion of the rationale to choose a suitable alloy for Aleair battery. < Effect of the properties and preparation route to enhance the oxidation of Al. < Effect of the inhibitors on the anode oxidation in the alkaline electrolyte. This review shows the influence of the materials, including: aluminium alloy, oxygen reduction catalyst and electrolyte type, in the battery performance. Two issues are considered: (a) the parasitic corrosion of aluminium at open-circuit potential and under discharge, due to the reduction of water on the anode and (b) the formation of a passive hydroxide layer on aluminium, which inhibits dissolution and shifts its potential to positive values. To overcome these two issues, super-pure (99.999 wt%) aluminium alloyed with traces of Mg, Sn, In and Ga are used to inhibit corrosion or to break down the passive hydroxide layer. Since high-purity aluminium alloys are expensive, an alternative approach is to add inhibitors or additives directly into the electrolyte. The effectiveness of binary and ternary alloys and the addition of different electrolyte additives are evaluated. Novel methods to overcome the self-corrosion problem include using anionic membranes and gel electrolytes or alternative solvents, such as alcohols or ionic liquids, to replace aqueous solutions. The air cathode is also considered and future opportunities and directions for the development of aluminiumeair cells are highlighted.

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Simultaneous X‐Ray Diffraction and Tomography Operando Investigation of Aluminum/Graphite Batteries

Elia

Greco

Kamm

et al. 2020

Adv Funct Materials

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Rechargeable graphite dual-ion batteries are extremely appealing for grid-level stationary storage of electricity, thanks to the low-cost and high-performance metrics, such as high-power density, energy efficiency, long cycling life, and good energy density. An in-depth understanding of the anion intercalation mechanism in graphite is fundamental for the design of highly efficient systems. In this work, a comparison is presented between pyrolytic (PG) and natural (NG) graphite as positive electrode materials in rechargeable aluminum batteries, employing an ionic liquid electrolyte. The two systems are characterized by operando synchrotron energy-dispersive X-ray diffraction and time-resolved computed tomography simultaneously, establishing a powerful characterization methodology, which can also be applied more in general to carbon-based energy-related materials. A more in-depth insight into the AlCl 4 − /graphite intercalation mechanism is obtained, evidencing a mixed-staged region in the initial phase and a two-staged region in the second phase. Moreover, strain analysis suggests a correlation between the irreversibility of the PG electrode and the increase of the inhomogenous strain. Finally, the imaging analysis reveals the influence of graphite morphology in the electrode volume expansion upon cycling.

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Studies on the AlCl3/dimethylsulfone (DMSO2) electrolytes for the aluminum deposition processes

Cited by 135 publications

References 30 publications

Optimization of pulsed electrodeposition of aluminum from AlCl3-1-ethyl-3-methylimidazolium chloride ionic liquid

Optimization of pulsed electrodeposition of aluminum from AlCl3-1-ethyl-3-methylimidazolium chloride ionic liquid

Developments in electrode materials and electrolytes for aluminium–air batteries

Simultaneous X‐Ray Diffraction and Tomography Operando Investigation of Aluminum/Graphite Batteries

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