Improved Ionic Conductivity of NBR/Epoxy Resin/LiClO4 Composites by Adding Ionic Liquid |
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| Authors: | Qian Zhang Ming Li Wentan Ren Yong Zhang |
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| Affiliation: | State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , Shanghai , China |
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| Abstract: | Solid polymer electrolyte with high ionic conductivity was prepared by adding an ionic liquid, 1-butyl-3-methylimidazolium trifluoromethanesulfonate (BMIMOTF) to the nitrile butadiene rubber/epoxy resin/LiClO4 (NBR-EP-Li) system. The addition of BMIMOTF into NBR-EP-Li composites, with the LiClO4/BMIMOTF mole ratio of 1/0.54, improved the conductivity by 6–17 times depending on the amount of LiClO4. Infrared difference spectroscopy and nuclear magnetic resonance spectroscopy analysis confirmed the interaction between LiClO4 and BMIMOTF, which caused a decreasing interaction between ClO4 ? and Li+. X-ray diffraction and field emission scanning electron microscopy analysis indicated BMIMOTF improved the dissolution of LiClO4 and contributed to the increase of conductivity by an increase of free Li+. |
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| Keywords: | dissolution of LiCiO4 Ionic conductivity Ionic liquid NBR |
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