• Preparation and Characterization of Chemical Gel Based on [Epoxy/PEG/PVdF-HFP] Blend for Lithium Polymer Battery Applications
  • Kim J, Seo J, Bae JY
  • [Epoxy/PEG/PVdF-HFP] 복합체를 이용한 리튬고분자전지용 화학겔의 제조 및 분석
  • 김주성, 서정인, 배진영
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 LiPF6 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 2.56×10^(-3) S/cm.

본 연구에서는 LiPF6염 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/PVdFHFP] 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 2.56×10^(-3) S/cm를 나타내었다.

Keywords: epoxy; polyethyleneglycol; PVDF-HFP; ionic conductivity; polymer gel electrolyte

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
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This Article

  • 2009; 33(6): 544-550

    Published online Nov 25, 2009

  • Received on May 1, 2009
  • Accepted on Sep 9, 2009