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Mixed Divalent Polymer Electrolytes

Published online by Cambridge University Press:  28 February 2011

Michael Cole ,
Roger J. Latham ,
Roger G. Linford  and
Mark H. Sheldon
Michael Cole
Affiliation:
Department of Chemistry, Leicester Polytechnic, P.O.Box 143, Leicester LEI 9BH, UK
Roger J. Latham
Affiliation:
Department of Chemistry, Leicester Polytechnic, P.O.Box 143, Leicester LEI 9BH, UK
Roger G. Linford
Affiliation:
Department of Chemistry, Leicester Polytechnic, P.O.Box 143, Leicester LEI 9BH, UK
Mark H. Sheldon
Affiliation:
Department of Chemistry, Leicester Polytechnic, P.O.Box 143, Leicester LEI 9BH, UK
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Abstract

Some features of interest for divalent polymer electrolytes are described. Attention is focussed on two contrasting roles for cations: providing chemical cross-links within the polymer matrix and offering a source of mobile charge carriers. The possible merits of using mixtures of two types of cation, one type for each role, is discussed. Alternative mixed salt systems containing two anions with a common cation are considered. Another class of mixed polymer electrolyte systems involving two divalent cations in conjunction with two monovalent anions is also examined in the context of illustrating competitive anion-cation interactions within the polymer matrix by EXAFS local structure techniques. Results for the systems PE015:ZnI2/Mg(CIO4)2, PEO15:ZnI2/Mg(CF3SO3)2, PEO15:CaI2/ZnI2 and PEO15:CaI2/CaBr2 are discussed.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 210: Symposium L – Solid State Ionics II , 1990 , 263
Copyright
Copyright © Materials Research Society 1991

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