Ion conducting behaviour and morphology of solid polymer electrolytes based on a regioselectively substituted cellulose ether with PEO side chains

Z. Yue, I. J. McEwen, J. M G Cowie

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The LiCF3SO3 complexes of a thermotropic cellulose ether having PEO side chains (TPEOCELL) were prepared and the effects of salt concentration on the conductivity and morphology were investigated. A linear dependence of log (conductivity) on reciprocal temperature occurs in these systems, with activation energies for ion transport in the range 53-73 kJ mol-1. TPEOCELL shows a periodic lamellar-like internal structure which is ascribed to the presence of cholesteric ordering. By contrast, its complexes exhibit an array structure composed of granular-like entities which coalesce irregularly to form a rough morphology. This morphological feature is taken to represent a liquid crystalline polymer-salt network in which a form of anisotropic microphase separation occurs.

Original languageEnglish
Pages (from-to)2281-2285
Number of pages5
JournalJournal of Materials Chemistry
Volume12
Issue number8
DOIs
Publication statusPublished - Aug 2002

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