Arai, Nana and Watanabe, Hikari and Yamaguchi, Tsuyoshi and Seki, Shiro and Ueno, Kazuhide and Dokko, Kaoru and Watanabe, Masayoshi and Kameda, Yasuo and Buchner, Richard and Umebayashi, Yasuhiro (2019) Dynamic Chelate Effect on the Li+-Ion Conduction in Solvate Ionic Liquids. JOURNAL OF PHYSICAL CHEMISTRY C, 123 (50). pp. 30228-30233. ISSN 1932-7447, 1932-7455
Full text not available from this repository. (Request a copy)Abstract
Lithium-glyme solvate ionic liquids (Li-G SILs), which typically consist of a lithium-ion (Li+) solvated by glymes of oligoethers and its counter anion, are expected as promising electrolytes for lithium secondary batteries. Additionally, a specific ligand-exchange Li+ conduction mechanism was proposed at the electrode/electrolyte interface of the cell using Li-G SILs. To reveal Li+ conduction in SILs, Li-G SILs with varying ethylene oxide chain lengths were investigated using various techniques that are sensitive to solution structure and dynamics. We found good correlations between the relaxation time of the slowest dielectric mode and the ionic conductivity as well as viscosity. We propose that a dynamic chelate effect, which is closely related to solvent exchange and/or contact ion-pair formation/dissociation, is important for Li+ conduction in these Li-G SILs.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHYSICOCHEMICAL PROPERTIES; ELECTROLYTE; GLYME; STABILITY; COMPLEXES; BEAMLINE; BL04B2; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > PD Dr. Richard Buchner |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 20 Mar 2020 07:04 |
| Last Modified: | 20 Mar 2020 07:04 |
| URI: | https://pred.uni-regensburg.de/id/eprint/25665 |
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