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Physical and electrochemical properties of N-alkyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide ionic liquids: PY13FSI and PY 14FSI

TitoloPhysical and electrochemical properties of N-alkyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide ionic liquids: PY13FSI and PY 14FSI
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2008
AutoriZhou, Q., Henderson W.A., Appetecchi Giovanni Battista, Montanino M., and Passerini S.
RivistaJournal of Physical Chemistry B
Volume112
Paginazione13577-13580
ISSN15206106
Parole chiaveAlkylation, Aprotic, Bis(trifluoromethanesulfonyl)imide, Electric conductivity, Electrochemical properties, Electrochemical stabilities, Ionic liquids, Ionization of liquids, Ions, Liquids, Melting, Negative ions, Phase transitions, Solid phase transitions, Thermal stabilities, Thermodynamic stability
Abstract

Two ionic liquids based upon N-alkyl-N-methylpyrrolidinium cations (PY 1R +) (R = 3 for propyl or 4 for butyl) and the bis(fluorosulfonyl)imide (FSI-), N(SO2F)2 -, anion have been extensively characterized. The ionic conductivity and viscosity of these materials are found to be among the highest and lowest, respectively, reported for aprotic ionic liquids. Both ionic liquids crystallize readily on cooling and undergo several solid-solid phase transitions on heating prior to melting. PY13FSI and PY14FSI are found to melt at -9 and -18°C, respectively. The thermal stability of PY13FSI and PY14FSI is notably lower than for the analogous salts with the bis(trifluoromethanesulfonyl)imide (TFSI-), N(SO2CF 3)2 -, anion. Both ionic liquids have a relatively wide electrochemical stability window of ∼5 V. © 2008 American Chemical Society.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-55949085724&doi=10.1021%2fjp805419f&partnerID=40&md5=ec65ed14bc01097999f0c8fb380112d2
DOI10.1021/jp805419f
Citation KeyZhou200813577