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

Journal Article


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.

Publication Date


  • 2002

Citation


  • Yue, Z., McEwen, I. J., & Cowie, J. M. G. (2002). Ion conducting behaviour and morphology of solid polymer electrolytes based on a regioselectively substituted cellulose ether with PEO side chains. Journal of Materials Chemistry, 12(8), 2281-2285. doi:10.1039/b201804g

Scopus Eid


  • 2-s2.0-0036688003

Start Page


  • 2281

End Page


  • 2285

Volume


  • 12

Issue


  • 8

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.

Publication Date


  • 2002

Citation


  • Yue, Z., McEwen, I. J., & Cowie, J. M. G. (2002). Ion conducting behaviour and morphology of solid polymer electrolytes based on a regioselectively substituted cellulose ether with PEO side chains. Journal of Materials Chemistry, 12(8), 2281-2285. doi:10.1039/b201804g

Scopus Eid


  • 2-s2.0-0036688003

Start Page


  • 2281

End Page


  • 2285

Volume


  • 12

Issue


  • 8