Enhanced ionic conductivity in PEO-LiClO4 hybrid electrolytes by structural modification

Jin Kyung Lee, Yong Ji Lee, Won Seok Chae, Yun Mo Sung

    Research output: Contribution to journalArticlepeer-review

    38 Citations (Scopus)

    Abstract

    Poly(ethylene oxide)-LiClO4-TiO2 organic-inorganic hybrids were synthesized for Li-polymer battery electrolytes using sol-gel processing. The hybrids containing TiO2 component showed the uniform film formation and also increased ionic conductivity. The hybrid films containing 10 wt% TiO2 showed the smooth surface morphologies and also the highest ionic conductivity. The molecular-level hybrid formation between PEO and TiO2 components was identified using FTIR analyses. The hybrids containing TiO2-Al2O3 mixtures showed the enhanced ionic conductivity compared to those containing only TiO2 most probably due to the Lewis acidic group formation at the surface of Al2O3 components. The PEO-LiClO 4-TiO2-Al2O3 hybrids showed high stability both in ionic conductivity and crystallinity. By the sol-gel processing two inorganic components were successfully introduced in the PEO matrix and high-performance solid electrolytes were achieved.

    Original languageEnglish
    Pages (from-to)941-944
    Number of pages4
    JournalJournal of Electroceramics
    Volume17
    Issue number2-4
    DOIs
    Publication statusPublished - 2006 Dec

    Bibliographical note

    Funding Information:
    Acknowledgments This study was supported by Korea Science & Engineering Foundation (KOSEF) through a basic science program (R05-2003-000-10503-0) in 2003.

    Keywords

    • Filler
    • Hybrid
    • Ionic conductivity
    • PEO
    • Sol-Gel

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Ceramics and Composites
    • Condensed Matter Physics
    • Mechanics of Materials
    • Electrical and Electronic Engineering
    • Materials Chemistry

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