Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Preparation and Characterization of Chemical Gel Based on [Epoxy/PEG/PVdF-HFP] Blend for Lithium Polymer Battery Applications

[Epoxy/PEG/PVdF-HFP] 복합체를 이용한 리튬고분자전지용 화학겔의 제조 및 분석

  • Kim, Joo-Sung (Department of Polymer Science and Engineering, Sungkyunkwan University) ;
  • Seo, Jeong-In (Department of Polymer Science and Engineering, Sungkyunkwan University) ;
  • Bae, Jin-Young (Department of Polymer Science and Engineering, Sungkyunkwan University)
  • 김주성 (성균관대학교 고분자공학과) ;
  • 서정인 (성균관대학교 고분자공학과) ;
  • 배진영 (성균관대학교 고분자공학과)
  • Published : 2009.11.25
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Abstract

In this study, we have designed [Epoxy/PEG] polymer gel electrolyte systems by thermal curing the mixtures of epoxy, PEG, imidazole catalyst, and a plasticizer of 1:1 ethylene carbonate and propylene carbonate in the presence of $LiPF_6$ salt. In order to enhance the poor mechanical property of the Corresponding [Epoxy/PEG] gel electrolyte PVdF-HFP was incorporated into the system. The ionic conductivities of the polymer gel electrolytes were related to the amount of PVdF-HFP in blends as well as the amount of liquid electrolyte. The optimized gel system showed room-temperature conductivities of $2.56\times10^{-3}S/cm$.

본 연구에서는 $LiPF_6$ 하에서의 에폭시, 폴리에틸렌글리콜, 이미다졸 촉매, ethylene carbonate와 propylene carbonate 1:1 가소제 혼합물을 열 경화하여 [Epoxy/PEG] 고분자겔 전해질 시스템을 고안하였다. 얻어진 [Epoxy/PEG] 고분자겔 전해질의 기계적 물성을 보완하기 위해서 PVdF-HFP를 복합화하였다. [Epoxy/PEG/PVdF-HFP] 복합체 고분자겔 전해질은 기계적 안정성 및 치수 안정성이 우수하였으며, 복합체의 이온전도도는 복합체의 액체 전해질의 양뿐만 아니라 PVdF-HFP 양에 크게 의존하는 결과를 얻었다. 최적화된 고분자겔 시스템의 상온 이온전도도는 $2.56\times10^{-3}S/cm$를 나타내었다.

Keywords

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