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Preparation and Electrochemical Properties of Polymeric Composite Electrolytes Containing Organic Clay Materials  

Kim, Seok (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Hwang, Eun-Ju (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Lee, Jea-Rock (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Kim, Hyung-Il (Department of Industrial Chemistry, Chungnam National University)
Park, Soo-Jin (Department of Chemistry, Inha University)
Publication Information
Polymer(Korea) / v.31, no.4, 2007 , pp. 297-301 More about this Journal
Abstract
In this work, polymer/(layered silicate) nanocomposites (PLSN) based on poly (ethylene oxide) (PEO), ethylene carbonate (EC) as a plasticizer, lithium salt ($LiClO_4$), and sodium montmorillonite ($Na^+-MMT$) or organic montmorillonite (organic MMT) clay were fabricated. And the effects of organic MMT on the polymer matrix were investigated as a function of ionic conductivity. For the application to electrolytes an Li batteries, polymer electrolytes containing the organic nanoclays were used in this work. As a result, the spacing between layers and hydrophobicity of the organic nanoclays were increased, affecting on the exfoliation behaviors of the MMT layers in clay/PEO nanocomposites. From ion-conductivity results, the organic-MMT showed higher values than those of $Na^+-MMT$, and the MMT-20A sample that was treated by methyl dihydrogenated tallow ammonium, showed the highest conductivity in this system.
Keywords
polymer/(layered silicate) nanocomposites; poly(ethylene oxide); organic montmorillonite; ionic conductivity;
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