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Physical properties of high Li-ion content N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide based ionic liquid electrolytes
journal contribution
posted on 2015-01-01, 00:00 authored by Martin Yoon, A S Best, Maria ForsythMaria Forsyth, D R MacFarlane, Patrick HowlettPatrick HowlettElectrolytes based on bis(fluorosulfonyl)imide (FSI) with a range of LiFSI salt concentrations were characterized using physical property measurements, as well as NMR, FT-IR and Raman spectroscopy. Different from the behavior at lower concentrations, the FSI electrolyte containing 1 : 1 salt to IL mole ratio showed less deviation from the KCl line in the Walden plot, suggesting greater ionic dissociation. Diffusion measurements show higher mobility of lithium ions compared to the other ions, which suggests that the partial conductivity of Li(+) is higher at this higher composition. Changes in the FT-IR and Raman peaks indicate that the cis-FSI conformation is preferred with increasing Li salt concentration.
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Journal
Physical chemistry chemical physicsVolume
17Issue
6Pagination
4656 - 4663Publisher
Royal Society of ChemistryLocation
Cambridge, Eng.Publisher DOI
ISSN
1463-9084eISSN
1463-9084Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2015, Royal Society of ChemistryUsage metrics
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