Study of complex formation between 18-crown-6 and diaza-18-crown-6 with uranyl cation (UO2 2+) in some binary mixed aqueous and non-aqueous solvents

Fard, Mohammad Ansari; Rounaghi, Gholam Hossein; Chamsaz, Mahmoud; Taheri, K.

doi:10.1007/s10847-009-9535-8

Cited by 17 publications

(3 citation statements)

References 27 publications

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“…9,12 The results show that the biggest decrease in ionic conductivity is observed for solvents with a donor number higher than 14, on account of their reaction with Li 3 PS 4 . A protic solvent like ethanol with a high donor number of 19 26 reacts by a nucleophilic attack, leading to the decomposition of sulfidic electrolytes and the evolution of H 2 S. Therefore, the most suitable candidates are toluene, p-xylene, heptane, anisole, or dichloroethane. The first four, for example, have already been successfully used for the preparation of SE/binder separator sheets, and the results showed no significant decrease in Li-ion conductivity.…”

Section: Resultsmentioning

confidence: 99%

From Powder to Sheets: A Comparative Electrolyte Study for Slurry-Based Processed Solid Electrolyte/Binder-Sheets as Separators in All-Solid-State Batteries

Sedlmeier

Kutsch

Schuster

et al. 2022

J. Electrochem. Soc.

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A key for the market penetration of large-scale and high energy All-Solid-State Batteries (ASSBs) are sheet-type cell components. Herein, we report a slurry-based process to obtain free-standing solid electrolyte (SE)/binder composite sheets as ASSB separators. We investigate three different sulfidic solid electrolyte systems (Li6PS5Cl, Li7P3S11 and Li10SnP2S12) in combination with a hydrogenated nitrile butadiene rubber (HNBR). By means of electrochemical impedance spectroscopy (EIS), the influence of separator composition and processing on the ionic sheet conductivity is evaluated. Independent of the solid electrolyte material, a reduction by a factor of three compared to the pristine powder conductivity at 70 MPa operation pressure and by a factor of eight compared to the maximum powder conductivity is observed. This can be attributed to the addition of the ionically isolating binder, which however is necessary for the production of freestanding sheets. We show the beneficial effect of pre-compressing the sheets to little porosity values on the apparent sheet conductivity. Lastly, we investigate and decouple the influence of fabrication and operating cell pressure on the produced separator sheets.

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Section: Resultsmentioning

confidence: 99%

From Powder to Sheets: A Comparative Electrolyte Study for Slurry-Based Processed Solid Electrolyte/Binder-Sheets as Separators in All-Solid-State Batteries

Sedlmeier

Kutsch

Schuster

et al. 2022

J. Electrochem. Soc.

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“…Such complexes are held together in unique structural relationships by electrostatic attraction between cation and negative end of C–O dipoles except those of full covalent bond. The firmness of the aforesaid crown ether–guest complexes strongly depends on how well the cation moiety fits into the ring of the polyether, influenced by the charge density of the cation, the nature, and the number of the heteroatoms. − …”

Section: Introductionmentioning

confidence: 99%

Evidences for Inclusion and Encapsulation of an Ionic liquid with β-CD and 18-C-6 in Aqueous Environments by Physicochemical Investigation

et al. 2018

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The interface between pyrrolidinium-based ionic liquid, i.e., 1-ethyl-1-methylpyrrolidinium bromide, with β-cyclodextrin and 18-crown-6 solution have been compared and explored by means of density, viscosity, refractive index, electrical conductance and surface tension, FTIR, H nuclear magnetic resonance, 2D ROESY NMR, and high resolution mass spectroscopy studies. Limiting apparent molar volumes (ϕ), experimental slopes (S) interpreted in terms of inclusion and interaction (ion-solvent, ion-ion). Establishment of binding affinity were discussed in molecular terms supported this inclusion complexation and encapsulation interaction process. The result shows that the stability of the resulting complexes of β-cyclodextrin:[EMPyrr] and 18-crown-6:[EMPyrr] is based on the geometrical and spectrometric data. Host guest chemistry of the five-membered nitrogen containing cation with two different macro cyclic hosts is supported by studying NMR. HRMS has been used to support the complexation process with the proper stoichiometry ratio. The solid complex formations were established by Fourier transform infrared study.

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“…The DN of water is 33.0, and that of ethanol is 19.1. 29 The experimental results ( Fig. 1 ) indicate that the ionic species formed during the leaching of NdFeB magnet might be slightly less soluble in the ethanolic lixiviant than in the aqueous lixiviant.…”

Section: Resultsmentioning

confidence: 92%

Chromatographic separation of rare earths from aqueous and ethanolic leachates of NdFeB and SmCo magnets by a supported ionic liquid phase

Avdibegović

Binnemans

2021

RSC Adv.

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Study of complex formation between 18-crown-6 and diaza-18-crown-6 with uranyl cation (UO2 2+) in some binary mixed aqueous and non-aqueous solvents

Cited by 17 publications

References 27 publications

From Powder to Sheets: A Comparative Electrolyte Study for Slurry-Based Processed Solid Electrolyte/Binder-Sheets as Separators in All-Solid-State Batteries

From Powder to Sheets: A Comparative Electrolyte Study for Slurry-Based Processed Solid Electrolyte/Binder-Sheets as Separators in All-Solid-State Batteries

Evidences for Inclusion and Encapsulation of an Ionic liquid with β-CD and 18-C-6 in Aqueous Environments by Physicochemical Investigation

Chromatographic separation of rare earths from aqueous and ethanolic leachates of NdFeB and SmCo magnets by a supported ionic liquid phase

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