Effect of Al₂O₃ Nanofiller on ion conductivity, transmittance, and glass transition temperature of PEI:LiTFSI:PC:EC polymer electrolytes

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• 作者：Oguzhan Sakarya ; Semra Kurama ; Goktug Gunkaya
• 关键词：Composite polymer electrolytes ; Nano additives ; Poly(ethyleneimine) ; Ionic conductivity ; Optical properties
• 刊名：Journal of Polymer Research
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：24
• 期：1
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Polymer Sciences; Industrial Chemistry/Chemical Engineering; Characterization and Evaluation of Materials;
• 出版者：Springer Netherlands
• ISSN：1572-8935
• 卷排序：24

文摘

In the present study, ion conductivity, optical properties, and glass transition temperatures are characterized for polymer electrolytes composed of poly(ethyleneimine) (PEI), lithium bis(trifluoromethane)sulfonylimide (LiTFSI) salt, propylene carbonate (PC), and ethylene carbonate (EC). It was doped with nanoceramic particles in different ratio (0–15 wt.%) to see the effect of ceramic particles. The salt concentration was fixed as 1.04 mol.kg−1. Although valuable improvement in ion conductivity could not be achieved due to nano-Al₂O₃ fillers, ion conductivity results are placed between 10−2 and 10−4 S/cm. Differential scanning calorimetry (DSC) measurements and optical measurements of all electrolytes were performed between −80 and 140 °C, in the wavelength range between 400 and 700 nm for sample with 80 μm thickness, respectively. The results showed that transmittance of electrolytes decreased monotonically for increasing Al₂O₃ contents. In particular, its transmittance value at 550 nm where human sight is at its greatest sensitivity went from 100% without nanoparticles to 50% for 15 wt% of Al₂O₃.