Physical Properties of Ionic Liquids for Electrochemical Applications

Ohno, Hiroyuki

doi:10.1002/9783527682706.ch3

Cited by 10 publications

(4 citation statements)

References 184 publications

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“…Ionic liquids (ILs), which are molten salts with a melting point below 100 • C, are very attractive electrolytes due to their unique properties: they exhibit in particular very low volatility, good thermal stability, and a wide electrochemical window. This window is usually far larger than 2 V, which makes it possible to perform anodic dissolution and electrodeposition of various metals with a limited ionic liquid degradation [8,23,24]. ILs appear promising for the recovery of hardly reducible metals [9,25,26], or noble metals of troublesome oxidation [27][28][29][30].…”

Section: Direct Electroleaching/electrodeposition Of Platinum In Ionimentioning

confidence: 99%

Recovery of Metals from Secondary Raw Materials by Coupled Electroleaching and Electrodeposition in Aqueous or Ionic Liquid Media

Leclerc

Legeai

Balva

et al. 2018

Metals

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This paper presents recent views on a hybrid process for beneficiation of secondary raw materials by combined electroleaching of targeted metals and electrodeposition. On the basis of several case studies with aqueous solutions or in ionic liquid media, the paper describes the potential and the limits of the novel, hybrid technique, together with the methodology employed, combining determination of speciation, physical chemistry, electrochemistry, and chemical engineering. On one hand, the case of electroleaching/electrodeposition (E/E) process in aqueous media, although often investigated at the bench scale, appears nevertheless relatively mature, because of the developed methodology, and the appreciable current density allowed, and so it can be used to successfully treat electrode materials of spent Zn/MnO 2 batteries or Ni/Cd accumulators and Waelz oxide. On the other hand, the use of ionic liquids as promising media for the recovery of various metals can be considered for other types of wastes, as shown here for the case of electrodes of aged fuel cells. The combined (E/E) technique could be successfully used for the above waste, in particular by the tricky selection of ionic liquid media. Nevertheless, further investigations in physical chemistry and chemical engineering appear necessary for possible developments of larger-scale processes for the recovery of these strategic resources.

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Section: Direct Electroleaching/electrodeposition Of Platinum In Ionimentioning

confidence: 99%

Recovery of Metals from Secondary Raw Materials by Coupled Electroleaching and Electrodeposition in Aqueous or Ionic Liquid Media

Leclerc

Legeai

Balva

et al. 2018

Metals

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“…The preparations of the 1, 3-dialkylimidazolium halides via conventional as well as non conventional methods are well documented in literature. [41] Ionic liquids [42][43][44] with acidic counter ions like 1-hexyl-3-methyl-imidazolium hydrogen sulphate([hmim] [HSO4]), [45]…”

Section: Hydrogenation [38] Mannich Typementioning

confidence: 99%

Synthesis of 3-(5-aryl-[1,3,4] oxadiazol-2yl)-1H-indazole derivatives using Ionic Liquid

2018

AJBPR

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We have studied a simple microwave assisted synthesis of 3-(5-aryl-[1,3,4]oxadiazole-2-yl)-1H indazole derivatives by the condensation of 1H indazole-3-carboxylic acid hydrazide and aromatic acids using Ionic liquid (1-benzyl-3-methyl imidazolium hydrogen sulphate [bnmim][HSO4]) as a catalyst under in excellent yields. Characterizations of all the synthesized compounds have been done on the basis of elemental analysis, spectroscopic methods like Infrared and 1 H, 13 C NMR.

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“…In this work, the poly(ionic liquid) 1-butyl-3-methylimidazolium poly[4-styrenesulfonyl(trifluoromethanesulfonyl)imide] (BMIPSTFSI) is mixed with the magnesiated analogue Mg(PSTFSI) 2 to create the dual cation exchanged polyanion as shown in Scheme . BMI + is chosen due to (1) enhanced charge delocalized structure and dissociability that enable higher ionic conductivity , and (2) adequate electrochemical stability . High total cation conductivities are found for these dual cation poly(ionic liquid) electrolytes with low Mg content.…”

Section: Introductionmentioning

confidence: 99%

Dual Cation Exchanged Poly(ionic liquid)s as Magnesium Conducting Electrolytes

Park

Ford

Merrill

et al. 2019

ACS Appl. Polym. Mater.

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Solid-state magnesium-ion conductors are desired for next-generation battery applications. Here we investigate magnesium conducting polymer electrolytes produced through dual cation exchange of a poly(ionic liquid) by mixing 1-butyl-3-methylimidazolium poly[4-styrenesulfonyl(trifluoromethanesulfonyl)imide] (BMIPSTFSI) with the magnesiated analogue Mg(PSTFSI)2. An ionic conductivity of 8.6 × 10–5 S cm–1 at 80 °C was achieved for the poly(ionic liquid), and conductivity did not significantly decrease with magnesium content up to 5 mol % Mg(PSTFSI)2 (3.8 × 10–5 S cm–1). The characteristic poly(ionic liquid) ion-to-ion correlation peak was observable via X-ray scattering at these low magnesium contents but disappeared at higher magnesium loadings. Polarization experiments were performed in Cu/Mg cells, resulting in sparse magnesium-rich particle-like deposits on the Cu electrode. With a lack of widespread deposition, however, either the magnesium electrodeposition or the magnesium stripping from the magnesium metal is unfavorable for this electrolyte.

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Physical Properties of Ionic Liquids for Electrochemical Applications

Cited by 10 publications

References 184 publications

Recovery of Metals from Secondary Raw Materials by Coupled Electroleaching and Electrodeposition in Aqueous or Ionic Liquid Media

Recovery of Metals from Secondary Raw Materials by Coupled Electroleaching and Electrodeposition in Aqueous or Ionic Liquid Media

Synthesis of 3-(5-aryl-[1,3,4] oxadiazol-2yl)-1H-indazole derivatives using Ionic Liquid

Dual Cation Exchanged Poly(ionic liquid)s as Magnesium Conducting Electrolytes

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