Electrodeposition of Aluminum from AlCl3/Et3NHCl Ionic Liquids

Gao, Lixia; Wang, Lina; Qi, Tao; Li, Yuping; Chu, Jinglong; Qu, Jingkui

doi:10.1016/s1872-1508(08)60040-6

Cited by 26 publications

(46 citation statements)

References 17 publications

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“…A similar change in the alumini-um speciation with temperature was observed in both ionic liquids, thereby indicating that the chemistry was similar in both. The electrodeposition of aluminium was shown to coincide with the formation of an asymmetric fourcoordinate aluminium-containing species with an 27 Al chemical shift of d = 94 and 92 ppm in the [C 3 2 ]-AlCl 3 systems, respectively. It was concluded that the aluminium-containing species that give rise to these resonances corresponds to the electroactive species and was assigned to [AlCl 3 A C H T U N G T R E N N U N G (NTf 2 )] À .…”

Section: Mpip]a C H T U N G T R E N N U N G [Ntf 2 ] and [C 4 Mpyr]-mentioning

confidence: 99%

“…A C H T U N G T R E N N U N G [NTf 2 ] was studied by variable-temperature 27 Al NMR spectroscopy to gain insights on the electroactive species responsible for aluminium electrodeposition. A similar change in the alumini-um speciation with temperature was observed in both ionic liquids, thereby indicating that the chemistry was similar in both.…”

Section: Mpip]a C H T U N G T R E N N U N G [Ntf 2 ] and [C 4 Mpyr]-mentioning

confidence: 99%

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Speciation of Aluminium in Mixtures of the Ionic Liquids [C₃mpip][NTf₂] and [C₄mpyr][NTf₂] with AlCl₃: An Electrochemical and NMR Spectroscopy Study

Rodopoulos

Smith

Horne

et al. 2010

Chemistry A European J

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This paper reports on the electrodeposition of aluminium on several substrates from the air- and water-stable ionic liquids 1-propyl-1-methylpiperidinium bis(trifluoromethylsulfonyl)amide ([C(3)mpip][NTf(2)]) and 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide ([C(4)mpyr][NTf(2)]), which contain anhydrous AlCl(3). At an AlCl(3) concentration of 0.75 molal, no evidence for aluminium electrodeposition was observed in either system at room temperature. However, aluminium electrodeposition becomes feasible upon heating the samples to 80 degrees C. Aluminium electrodeposition from bis(trifluoromethylsulfonyl)amide-based ionic liquids that contain AlCl(3) has previously been shown to be very dependent upon the AlCl(3) concentration and has not been demonstrated at AlCl(3) concentrations below 1.13 molal. The dissolution of AlCl(3) in [C(3)mpip][NTf(2)] and [C(4)mpyr][NTf(2)] was studied by variable-temperature (27)Al NMR spectroscopy to gain insights on the electroactive species responsible for aluminium electrodeposition. A similar change in the aluminium speciation with temperature was observed in both ionic liquids, thereby indicating that the chemistry was similar in both. The electrodeposition of aluminium was shown to coincide with the formation of an asymmetric four-coordinate aluminium-containing species with an (27)Al chemical shift of delta=94 and 92 ppm in the [C(3)mpip][NTf(2)]-AlCl(3) and [C(4)mpyr][NTf(2)]-AlCl(3) systems, respectively. It was concluded that the aluminium-containing species that give rise to these resonances corresponds to the electroactive species and was assigned to [AlCl(3)(NTf(2))](-).

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Section: Mpip]a C H T U N G T R E N N U N G [Ntf 2 ] and [C 4 Mpyr]-mentioning

confidence: 99%

Section: Mpip]a C H T U N G T R E N N U N G [Ntf 2 ] and [C 4 Mpyr]-mentioning

confidence: 99%

Speciation of Aluminium in Mixtures of the Ionic Liquids [C₃mpip][NTf₂] and [C₄mpyr][NTf₂] with AlCl₃: An Electrochemical and NMR Spectroscopy Study

Rodopoulos

Smith

Horne

et al. 2010

Chemistry A European J

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“…In the last years, aluminum has been successfully electrodeposited from several ionic liquid electrolytes, most of them formed by the eutectic combination of AlCl 3 and imidazolium or pyrimidinium chloride salts . However, in spite of having demonstrated the viability of electrodepositing coatings of highly pure aluminum on different metallic surfaces, the process is still not optimized.…”

Section: Introductionmentioning

confidence: 99%

“…[9,10] In the last years, aluminum has been successfully electrodeposited from several ionic liquid electrolytes, most of them formed by the eutectic combination of AlCl 3 and imidazolium or pyrimidinium chloride salts. [11][12][13][14][15][16][17][18] However, in spite of having demonstrated the viability of electrodepositing coatings of highly pure aluminum on different metallic surfaces, [11,15,[19][20][21][22][23] the process is still not optimized. Thus, the obtained coatings are matt and non-homogeneous and regularly exhibit dendritic crystals or burned areas on the cathode surface.…”

Section: Introductionmentioning

confidence: 99%

Robust Aluminum Electrodeposition from Ionic Liquid Electrolytes Containing Light Aromatic Naphta as Additive

et al. 2019

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Aluminum electrodeposition can be carried out from several ionic liquid electrolyte formulations. Nevertheless, this plating process has not been industrialized so far because of the durability of the electrolytes and because the Al coatings obtained are non‐fully homogeneous in terms of coating morphology and thickness distribution. In this work we electrodeposited Al coatings from a 3‐butyl‐1‐ethylimidazolium tetrachloroaluminate electrolyte additivated with increasing concentrations of a new cost‐effective additive: light aromatic naphtha solvent. Firstly, electrolytes were characterized by cyclic voltammetry, where changes in the electrochemistry of the process were identified. Then, surface characterization showed that Al coatings morphology turned out to be smoother, more homogeneous and more compact with increasing additive concentration. Furthermore, the process was scaled up to flat plates of 18 cm 2 area and also on 25 cm 2 parts designed with straight corners to demonstrate both the optimization of the electrolytic bath performance and its throwing power enhancement.

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“…It is widely used in aviation, automobile, architecture and daily life [1][2]. Many researchers continually seek for the methods of preparation of magnesium-aluminum coating because of its decorative, strong oxidation resistance and excellent mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

The Preparation Method of Aluminum-magnesium Alloys

Zhu¹,

Kan²,

Feng³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Abstract. In this paper, the preparation methods of aluminum-magnesium alloys are reviewed. The three methods of preparation of aluminum-magnesium alloys are introduced: the mixing method, mechanical alloying method, electrodeposition method. And the advantages and disadvantages and characteristics of three methods are expounded. Nowdays, the mixing method and mechanical alloying method are relatively mature. But heat consumption is great. Compared with mechanical alloying method, the electrodeposition method requires simple equipment and it's easy to operate. More uniform grain can be obtained. It has attracted general concern to prepare Al-Mg alloys by the electrodeposition method. In this paper aluminum-magnesium alloys are prepared by direct current electrodeposition and pulse electrodeposition in AlCl 3 -LiAlH 4 -benzene-tetrahydrofuran (THF) system. The deposit morphology and chemical compositions of coatings by direct current and pulse electrodeposition are compared. The effects of the pulse duration ratio on coatings are studied. The coatings obtained by pulse electrodeposition are greater than the coatings obtained by direct current electrodeposition under the same electroplating conditions. The grain sizes of the coatings obtained by pulse electrodeposition are smaller, and the magnesium contents of the coatings are higher.

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Electrodeposition of Aluminum from AlCl3/Et3NHCl Ionic Liquids

Cited by 26 publications

References 17 publications

Speciation of Aluminium in Mixtures of the Ionic Liquids [C₃mpip][NTf₂] and [C₄mpyr][NTf₂] with AlCl₃: An Electrochemical and NMR Spectroscopy Study

Speciation of Aluminium in Mixtures of the Ionic Liquids [C₃mpip][NTf₂] and [C₄mpyr][NTf₂] with AlCl₃: An Electrochemical and NMR Spectroscopy Study

Robust Aluminum Electrodeposition from Ionic Liquid Electrolytes Containing Light Aromatic Naphta as Additive

The Preparation Method of Aluminum-magnesium Alloys

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Electrodeposition of Aluminum from AlCl3/Et3NHCl Ionic Liquids

Cited by 26 publications

References 17 publications

Speciation of Aluminium in Mixtures of the Ionic Liquids [C3mpip][NTf2] and [C4mpyr][NTf2] with AlCl3: An Electrochemical and NMR Spectroscopy Study

Speciation of Aluminium in Mixtures of the Ionic Liquids [C3mpip][NTf2] and [C4mpyr][NTf2] with AlCl3: An Electrochemical and NMR Spectroscopy Study

Robust Aluminum Electrodeposition from Ionic Liquid Electrolytes Containing Light Aromatic Naphta as Additive

The Preparation Method of Aluminum-magnesium Alloys

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Product

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Speciation of Aluminium in Mixtures of the Ionic Liquids [C₃mpip][NTf₂] and [C₄mpyr][NTf₂] with AlCl₃: An Electrochemical and NMR Spectroscopy Study

Speciation of Aluminium in Mixtures of the Ionic Liquids [C₃mpip][NTf₂] and [C₄mpyr][NTf₂] with AlCl₃: An Electrochemical and NMR Spectroscopy Study