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Synthesis and Physicochemical Properties of Branched Solid Polymer Electrolytes Containing Ethylene Carbonate Group

에틸렌 카보네이트기를 함유하는 가지형 고체 고분자전해질의 합성 및 물리화학적 특성

Kim, Doo-Hwan;Ryu, Sang-Woog
김두환;류상욱

  • Received : 2015.07.26
  • Accepted : 2015.10.13
  • Published : 2015.11.30

Abstract

In this study polymer electrolytes containing ethylene carbonate group which have a high dielectric constant and poly(ethylene glycol) as branches were prepared by the Williamson reaction between poly(ethylene glycol) methyl ether and block copolymers composed of glycerol-1,2-carbonate and 4-chloromethyl styrene. Interestingly, the highest ionic conductivity of $1.75{\times}10^{-5}S\;cm^{-1}$ was observed from the polymer electrolyte having 7 mol% of ethylene carbonate and the [EO]:[Li] ratio of 32:1. Moreover, it was found that the electrochemical stability of polymer electrolyte was achieved up to 5.5 V because of the presence of ethylene carbonate.

Keywords

Ethylene carbonate;Polymer electrolyte;Branch;Ionic conductivity;Electrochemical stability

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Cited by

  1. Electrochemical Properties of Ionic Liquid Composite Poly(ethylene oxide)(PEO) Solid Polymer Electrolyte vol.19, pp.3, 2016, https://doi.org/10.5229/JKES.2016.19.3.101

Acknowledgement

Supported by : 충북대학교