title: Imidazolium-Based Poly(ionic liquid)/Ionic Liquid Ion-Gels with High Ionic Conductivity Prepared from a Curable Poly(ionic liquid).
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.
authors.affiliation: Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO, 80309, USA.|Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, 80309, USA.
authors.forename: Matthew G
authors.initials: MG
authors.lastname: Cowan
authors.affiliation: Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, 80309, USA.
authors.forename: Alexander M
authors.initials: AM
authors.lastname: Lopez
authors.affiliation: Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, 80309, USA.
authors.forename: Miyuki
authors.initials: M
authors.lastname: Masuda
authors.affiliation: Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, 80309, USA.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Kohno
authors.affiliation: Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, 80309, USA.
authors.forename: William M
authors.initials: WM
authors.lastname: McDanel
authors.affiliation: Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, 80309, USA.
authors.forename: Richard D
authors.initials: RD
authors.lastname: Noble
authors.affiliation: Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO, 80309, USA.|Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, 80309, USA.
authors.forename: Douglas L
authors.initials: DL
authors.lastname: Gin
mesh_terms: D003432:Cross-Linking Reagents / Q000138:chemical synthesis / Q000737:chemistry*; D004553:Electric Conductivity; D005782:Gels / Q000138:chemical synthesis / Q000737:chemistry; D007093:Imidazoles / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D015394:Molecular Structure; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D013696:Temperature
chemical_list: D003432:Cross-Linking Reagents; D005782:Gels; D007093:Imidazoles; D052578:Ionic Liquids; D011108:Polymers
keywords: curable poly(ionic liquids); ion-gels; ionic conductivity; protic ionic liquids