Cellulose triacetate‐based polymer gel electrolytes |
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| Authors: | Jung Min Lee Dinh Quan Nguyen Seul Bee Lee Honggon Kim Byoung Sung Ahn Hyunjoo Lee Hoon Sik Kim |
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| Affiliation: | 1. Energy and Environment Research Division, Korea Institute of Science and Technology, Seongbuk‐gu, Seoul 136‐791, Republic of Korea;2. Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, Dongdaemoon‐gu, Seoul 130‐701, Republic of Korea |
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| Abstract: | New composite polymer gels were obtained from cellulose triacetate (CTA), N‐methyl‐N′‐propylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr1,3TFSI), and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). Analysis by differential scanning calorimeter and scanning electron microscope showed that the ionic gel consisting of CTA, Pyr1,3TFSI, and LiTFSI formed a completely homogeneous phase at the molar ratio of CTA/Pyr1,3TFSI/LiTFSI = 1/3/1.5. The ionic conductivity of the polymer gel was significantly enhanced by the presence of LiTFSI. FTIR study strongly implies that the interaction of lithium ion with the carbonyl group of CTA could be responsible for the increase in conductivity. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 |
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| Keywords: | cellulose triacetate gel electrolyte ionic liquid lithium conduction lithium battery |
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