Effects of lithium bis(oxalato)borate on electrochemical stability of [Emim][Al2Cl7] ionic liquid for aluminum electrolysis

Lang, Haitao; Zhang, Junling; Kang, Yongqiang; Chen, Shimou; Zhang, Suojiang

doi:10.1007/s11581-016-1889-5

Cited by 8 publications

(4 citation statements)

References 43 publications

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“…The detailed information of these electrolytes is provided in Table S1 (Supporting Information). [14,16,17,[26][27][28] It can be seen that although the displacement of organic salts in chloroaluminate ILs can improve the high-voltage stability, all electrolytes with no additive show oxidation onset potential below 2.6 V versus Al 3+ /Al. With the additive of LiBOB, an IL electrolyte of AlCl 3 /[EMIm]Cl can deliver a good high-voltage stability at 100 °C.…”

Section: Resultsmentioning

confidence: 99%

“…For instance, it was reported that the replacement of [EMIm] + with 1-butyl-3-methylimidazolium cation ([BMIm] + ) can improve the oxidation onset potential from 2.25 to 2.6 V. [14,16] Since the large bis(oxalato)borate anion (BOB − ) can inhibit the reduction of [EMIm] + cations, the oxidation onset potential of the AlCl 3 /[EMIm]Cl IL at 100 °C has been improved from 2.59 to 2.74 V by using the LiBOB additive. [17] However, the optimization of oxidation onset potential by these strategies is still far from satisfying. More importantly, at present, ILs are the most widely used electrolytes for AIBs, which are expensive and significantly weaken the low-cost advantage of AIBs.…”

Section: Introductionmentioning

confidence: 99%

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High‐Voltage Deep Eutectic Solvent Electrolyte with Fluorine‐Substituted Acetamide Additive for Aluminum‐ion Battery

Chu,

Zhang,

Zhao

et al. 2023

Adv Funct Materials

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The high‐voltage stability of electrolytes profoundly determines electrochemical reactions, which is still one of the major obstacles for developing advanced Al‐ion batteries (AIBs). Herein, a fluorine‐adjustment strategy is proposed to improve the high‐voltage stability of a low‐cost AlCl3/acetamide (AcA) deep eutectic solvent electrolyte. By using a fluorine‐substituted AcA additive, the AlCl3/AcA electrolyte exhibits a lifted oxidation onset potential from 2.21 to 2.78 V versus Al3+/Al. Based on a series of structural investigations, it is found that the additive can adjust the coordination configurations and improve the anti‐oxidation capability of electrolytes. Moreover, the additive induces an F‐rich interphase layer, which can stabilize the plating/stripping reactions of Al electrode with accelerated kinetics. Based on the optimized electrolyte, a high‐voltage Al–S battery relying on the S cationic redox shows good performance with little voltage fading for 300 cycles. This study provides important insights into the exploration of high‐performance and low‐cost electrolytes for AIBs.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High‐Voltage Deep Eutectic Solvent Electrolyte with Fluorine‐Substituted Acetamide Additive for Aluminum‐ion Battery

Chu,

Zhang,

Zhao

et al. 2023

Adv Funct Materials

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“…Therefore, the research and development of new aluminum electrolysis technology with high efficiency, energy conservation and environmental protection are of great significance. The emergence of room temperature molten salt ionic liquid provides a possibility for the development of low temperature electrolytic aluminum technology [10][11][12][13][14][15][16][17][18][19][20]. In 1992, Carlin et al [10] electrolysis metal aluminum at room temperature with chloride-1ethyl-3-methylimidazole/chloroaluminate ([Emim]Cl/AlCl 3 ) ionic liquid, which attracted great interest of researchers.…”

Section: Introductionmentioning

confidence: 99%

“…In 1992, Carlin et al [10] electrolysis metal aluminum at room temperature with chloride-1ethyl-3-methylimidazole/chloroaluminate ([Emim]Cl/AlCl 3 ) ionic liquid, which attracted great interest of researchers. In recent years, significant progress has been made in re-lated research [11][12][13][14][15][16][17][18][19][20]. Generally, aluminum electrodeposition and electrolytic refining in ionic liquids mostly use imidazole chloride and chloroaluminate system, which are sensitive to water and air and has relatively high cost.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Benzene on the Structure and Properties of Triethylamine Hydrochloride/Chloroaluminate

Tian

Yuan

2021

Crystals

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The effects of benzene (C6H6) on the radial distribution function, coordination number, spatial distribution function, physical and chemical properties such as density, viscosity, conductivity and transport properties of triethylamine hydrochloride /chloroaluminate ([Et3NH] Cl/AlCl3) ionic liquid were studied by first principle and molecular dynamics simulation. The stable geometry and electronic properties of benzene and ionic liquids, as well as their optimized adsorption on Cu (111) surface were obtained. The density, viscosity and conductivity obtained agreed well with the experimental values. It is found that the adsorption of cations, anions and benzene on Cu (111) surface is physical adsorption, and the adsorption capacity is [Et3NH] > C6H6 > Al2Cl7−. With the increase of benzene concentration, the density of the system decreases gradually, the interaction between cations and anions gradually weakens, resulting in the decrease of viscosity, the enhancement of diffusion and the increase of conductivity. Since the diffusion and adsorption capacity of benzene are greater than that of electroactive ion of Al2Cl7−, benzene would be easier to adsorb on the protruding part of the electrode surface, so as to reduce the effective surface area of the cathode, slow down the reduction speed of Al2Cl7− on the cathode surface and increase the over-potential, so the grain refined deposition layers can be obtained in electrodeposition.

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Template-free preparation of spherical Al particles in aluminum chloride and 1-butyl-3-methylimidazolium chloride ionic liquid

Lang

Wang

et al. 2017

Ionics

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Effects of lithium bis(oxalato)borate on electrochemical stability of [Emim][Al2Cl7] ionic liquid for aluminum electrolysis

Cited by 8 publications

References 43 publications

High‐Voltage Deep Eutectic Solvent Electrolyte with Fluorine‐Substituted Acetamide Additive for Aluminum‐ion Battery

High‐Voltage Deep Eutectic Solvent Electrolyte with Fluorine‐Substituted Acetamide Additive for Aluminum‐ion Battery

The Effects of Benzene on the Structure and Properties of Triethylamine Hydrochloride/Chloroaluminate

Template-free preparation of spherical Al particles in aluminum chloride and 1-butyl-3-methylimidazolium chloride ionic liquid

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