Anion Coordination Characteristics of Ion-pair Complexes in Highly Concentrated Aqueous Lithium Bis(trifluoromethanesulfonyl)amide Electrolytes

Anion Coordination Characteristics of Ion-pair Complexes in Highly Concentrated Aqueous Lithium Bis(trifluoromethanesulfonyl)amide Electrolytes

We report on the structures of Li-ion complexes in salt-concentrated aqueous electrolytes based on lithium bis(trifluoromethanesulfonyl)amide (LiTFSA), particularly focusing on the anion coordination behavior of the ion-pair complexes in the high concentration region cLi > 3.0 mol dm−3. Quantitat...

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Veröffentlicht in:Analytical Sciences 2019/03/10, Vol.35(3), pp.289-294
Hauptverfasser: TSURUMURA, Tatsuya, HASHIMOTO, Yasushi, MORITA, Masayuki, UMEBAYASHI, Yasuhiro, FUJII, Kenta
Format: Artikel
Sprache:eng
Schlagworte:
Analytical Chemistry
Anions
Aqueous electrolytes
Chemistry
Coordination compounds
Data analysis
Electrolytes
Ion currents
Ion pairs
ion-pair complex
Ions
Lithium
Raman spectra
Raman spectroscopy
Salt-concentrated electrolytes
solvation
Viscosity
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Zusammenfassung:We report on the structures of Li-ion complexes in salt-concentrated aqueous electrolytes based on lithium bis(trifluoromethanesulfonyl)amide (LiTFSA), particularly focusing on the anion coordination behavior of the ion-pair complexes in the high concentration region cLi > 3.0 mol dm−3. Quantitative data analysis of the Raman spectra revealed the following. (1) Li ions do not coordinate with TFSA anions at lower cLi (
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.18P407