Preparation and Performances of Polymer Electrolytes Based on the Random Copolymer of Epichlorohydrin and Ethylene Oxide

doi:10.7503/cjcu20111209

Abstract

Abstract:

A series of polymer electrolytes was prepared by dissolving LiCF₃SO₃ at different ratios in the matrix of epichlorohydrin elastomers(ECO). It is found that the conductivity of ECO-LiCF₃SO₃ polymer electrolytes increases by nearly two orders of magnitude compared with that of PEO-LiCF₃SO₃ polymer electrolytes at ambient temperatures and does not exhibit a conductivity hysteresis in heating and cooling scans. The differential scanning calorimetry(DSC) results show the influence of lithium ion concentration on the glass transition temperature(T_g) of polymer electrolytes, while the Fourier transform infrared spectra(FTIR) studies demonstrate the interaction between LiCF₃SO₃ and polymer matrix. Both the enhancement of ionic conductivity and the lack of conductivity hysteresis for the electrolytes could be attributed to the amorphism of ECO.

Key words: Polymer electrolyte, Epichlorohydrin elastomer(ECO), Amorphism, Ionic conductivity

CLC Number:

O631.2
O646

TrendMD:

BAI Lian, JI Yan-Zhou, LI Ming, NAN Ce-Wen. Preparation and Performances of Polymer Electrolytes Based on the Random Copolymer of Epichlorohydrin and Ethylene Oxide[J]. Chem. J. Chinese Universities, 2012, 33(10): 2339.

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Preparation and Performances of Polymer Electrolytes Based on the Random Copolymer of Epichlorohydrin and Ethylene Oxide

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