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Preparation and Characterization of Chemical Gel Based on [Epoxy/PEG/PVdF-HFP] Blend for Lithium Polymer Battery Applications  

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)
Publication Information
Polymer(Korea) / v.33, no.6, 2009 , pp. 544-550 More about this Journal
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 $2.56\times10^{-3}S/cm$.
Keywords
epoxy; Polyethyleneglycol; PVDF-HFP; ionic conductivity; polymer gel electrolyte;
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