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Enhanced Ion mobility in Aluminosilicate/Polysiloxane Network Polyelectrolytes

Published online by Cambridge University Press:  10 February 2011

David P. Siska  and
Duward F. Shriver
David P. Siska
Affiliation:
Northwestern University, Department of Chemistry and Materials Research Center 2145 Sheridan Road, Evanston, IL 60208-3113
Duward F. Shriver
Affiliation:
Northwestern University, Department of Chemistry and Materials Research Center 2145 Sheridan Road, Evanston, IL 60208-3113
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Abstract

A new series of polysiloxane-based single-ion conductors was prepared. These contain solvating oligoether sidechains and covalently linked aluminosilicate or alkoxy/siloxy-aluminate anions attached to the polysiloxane backbone. Of these two systems, the polymers containing aluminosilicate [(SiO)4Al]− anions show higher room temperature conductivities (10−6 S/cm) than those with alkoxy/siloxyaluminate [(SiO)2(CH2O)2A1]− anions (10−7 S/cm). The incorporation of longer covalent tethers between the alkoxy/siloxyaluminate anion and the polymer backbone results in enhanced room temperature conductivities at high ion loadings. Differential scanning calorimetry data provide a rationale for the high conductivity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 575: Symposium CC – New Materials for Batteries & Fuel Cells , 1999 , 131
Copyright
Copyright © Materials Research Society 2000

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