Physical properties of high Li-ion content N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide based ionic liquid electrolytes
Version 2 2024-06-03, 14:38Version 2 2024-06-03, 14:38
Version 1 2015-08-17, 13:52Version 1 2015-08-17, 13:52
journal contribution
posted on 2024-06-03, 14:38authored byH Yoon, AS Best, Maria ForsythMaria Forsyth, DR MacFarlane, Patrick Howlett
Electrolytes 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.
History
Journal
Physical chemistry chemical physics
Volume
17
Pagination
4656-4663
Location
Cambridge, Eng.
ISSN
1463-9084
eISSN
1463-9084
Language
eng
Publication classification
C Journal article, C1 Refereed article in a scholarly journal