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Vol. 26 No. 17 (2014): Vol 26 Issue 17

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Waterborne Polyurethane Polymer Electrolytes Containing Poly(ethylene glycol) and Polydimethylsiloxane in Soft Segments

https://doi.org/10.14233/ajchem.2014.18187
Yue-Jiao Li
Beijing Key Laboratory of Environmental Science and Engineering, School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081 P.R. China ; National Development Center for High Technology Green Material, Beijing 100081, P.R. China
Shi Chen
Beijing Key Laboratory of Environmental Science and Engineering, School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081 P.R. China ; National Development Center for High Technology Green Material, Beijing 100081, P.R. China
Feng Wu
Beijing Key Laboratory of Environmental Science and Engineering, School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081 P.R. China ; National Development Center for High Technology Green Material, Beijing 100081, P.R. China

Corresponding Author(s) : Yue-Jiao Li

lyj@bit.edu.cn

Asian Journal of Chemistry, Vol. 26 No. 17 (2014): Vol 26 Issue 17

Abstract

New waterborne polyurethane polymer electrolytes containing poly(ethylene glycol) and polydimethylsiloxane (PDMS) in the soft segments were designed and synthesized. The structure and performance of the electrolytes were characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, electrochemical impedance spectroscopy and linear sweep voltammetry. The membranes exhibited good electrochemical stability. The thermal stability of the polymer electrolytes increased with increased content of polydimethylsiloxane. The conductivity results indicated that the incorporation of polydimethylsiloxane up to a certain amount (17 wt %) increased the ionic conductivity, but further addition decreased the conductivity. Gel polymer electrolytes were obtained by immersing polymer membranes in 1 M LiTFSI/DMC+EC (DMC:EC = 1:1 by weight) for different durations. These electrolytes possessed good ionic conductivity, i.e., ca. 2.52 × 10-3 S/cm with a swollen percentage of 130 wt % at room temperature.

Keywords

Polymer electrolyte Waterborne polyurethane Polydimethylsiloxane Copolymerization Ionic conductivity
Li, Y.-J., Chen, S., & Wu, F. (2014). Waterborne Polyurethane Polymer Electrolytes Containing Poly(ethylene glycol) and Polydimethylsiloxane in Soft Segments. Asian Journal of Chemistry, 26(17), 5703–5708. https://doi.org/10.14233/ajchem.2014.18187
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