Imidazolium‐Based Poly(ionic liquid)/Ionic Liquid Ion‐Gels with High Ionic Conductivity Prepared from a Curable Poly(ionic liquid). Issue 14 (6th May 2016)

• Record Type: Journal Article
• Authors: Cowan, Matthew G.; Lopez, Alexander M.; Masuda, Miyuki; Kohno, Yuki; McDanel, William M.; Noble, Richard D.; Gin, Douglas L.
• Other Names: Long Timothy E. guestEditor.; Elabd Yossef A. guestEditor.; Yuan Jiayin guestEditor.
• Is Part Of: Macromolecular rapid communications. Volume 37:Issue 14(2016)
• Page Start: 1150
• Page End: 1154
• Publication Date: 2016-05-06
• Subjects: curable poly(ionic liquids) -- ionic conductivity -- ion‐gels -- protic ionic liquids; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.201600029
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract : Ionic liquid (IL)‐based ion‐gel membranes were prepared from a curable poly(IL)‐based materials platform with the free ILs 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM][TFSI]), bis(fluorosulfonyl)imide ([EMIM][FSI]), 1‐butylimidazolium bis(trifluoromethylsulfonyl)imide ([C4 IMH][TFSI]), and ethylmethylammonium nitrate [EAN][NO3 ] and evaluated for their ionic conductivity performance at ambient and elevated temperatures. The resulting cross‐linked, free‐standing ion‐gel membranes were found to have less than 1 wt% water (with the exception of [EAN][NO3 ] which contained ≈20 wt% water). Increasing free IL content from 50 to 80 wt% produces materials with ionic conductivity values ≥10 –2 S cm −1 at 25 °C and ≈10 –1 S cm −1 at 110 °C. Additionally, ion‐gels containing 70 wt% of the protic ILs [C4 IMH][TFSI] and [EMIM][FSI] display ionic conductivity values of ≈10 –3 to 10 −2 S cm −1 over the temperature range of 25–110 °C. Abstract : A series of free‐standing, imidazolium‐based poly(ionic liquid)/ionic liquid (PIL/IL) ion‐gels was prepared that exhibit ionic conductivity values up to ≈10 –2 S/cm at 25 °C and ≈10 –1 S/cm at 110 °C. These materials were prepared using a curable PIL platform that is compatible with a range of added ILs.