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

• Published in: Journal of electroceramics 2006-12, Vol.17 (2-4), p.941-944
• Main Authors: LEE, Jin-Kyung, LEE, Yong-Ji, CHAE, Won-Seok, SUNG, Yun-Mo
• Format: Article
• Language: English
• Subjects: Applied sciences; Direct energy conversion and energy accumulation; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Electrolytes; Exact sciences and technology
• ISSN: 1385-3449; 1573-8663
• DOI: 10.1007/s10832-006-7672-7

Issue Title: Special Issue: ICE-2005 International Conference on Electroceramics Poly(ethylene oxide)-LiClO^sub 4^-TiO^sub 2^ organic-inorganic hybrids were synthesized for Li-polymer battery electrolytes using sol-gel processing. The hybrids containing TiO^sub 2^ component showed the uniform film formation and also increased ionic conductivity. The hybrid films containing 10 wt% TiO^sub 2^ showed the smooth surface morphologies and also the highest ionic conductivity. The molecular-level hybrid formation between PEO and TiO^sub 2^ components was identified using FTIR analyses. The hybrids containing TiO^sub 2^-Al^sub 2^O^sub 3^ mixtures showed the enhanced ionic conductivity compared to those containing only TiO^sub 2^ most probably due to the Lewis acidic group formation at the surface of Al^sub 2^O^sub 3^ components. The PEO-LiClO^sub 4^-TiO^sub 2^-Al^sub 2^O^sub 3^ 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.[PUBLICATION ABSTRACT]