Imidazolium-Based Poly(ionic liquid)/Ionic Liquid Ion-Gels with High Ionic Conductivity Prepared from a Curable Poly(ionic liquid)
Imidazolium-Based Poly(ionic liquid)/Ionic Liquid Ion-Gels with High Ionic Conductivity Prepared from a Curable Poly(ionic liquid)
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DOI：
10.1002/marc.201600029
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发表时间：
2016-07-01
影响因子：
4.6
通讯作者：
Gin, Douglas L.
中科院分区：
文献类型：
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作者：
Cowan, Matthew G.;Lopez, Alexander M.;Gin, Douglas L.
以1-乙基-3-甲基咪唑双(三氟甲基磺酰)亚胺([EMIM][TFSI])、二(氟磺酰)亚胺([EMIM][FSI])、1-丁基咪唑双(三氟甲基磺酰)亚胺([C4IMH][TFSI])和乙基甲基硝酸铵[NO3]为原料，在可固化的聚(IL)基材料平台上制备了离子液体(IL)基离子凝胶膜，并评价了它们在常温和高温下的电导率和离子性能。结果发现，得到的交联型独立离子凝胶膜的水含量不到1wt%([EAN][NO3]除外，其水含量约为20wt%)。将游离IL含量从50wt%增加到80wt%，可制备出离子电导率在25℃时为10(-2)S厘米(-1)，在110℃时接近10(-1)S厘米(-1)的材料。此外，含有70wt%质子态ILS[C4IMH][TFSI]和[EMIM][FSI]的离子凝胶在25-110℃的温度范围内离子电导率接近10(-3)到10(-2)S厘米(-1)。
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 ([C4IMH][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][NO 3] which contained approximate to 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 degrees C and approximate to 10(-1) S cm(-1) at 110 degrees C. Additionally, ion-gels containing 70 wt% of the protic ILs [C4IMH][TFSI] and [EMIM][FSI] display ionic conductivity values of approximate to 10(-3) to 10(-2) S cm(-1) over the temperature range of 25-110 degrees C.