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Polymer Electrolytes with Exclusively Cationic Conductivity

Published online by Cambridge University Press:  21 February 2011

H. Liu
Affiliation:
Polytechnic University, Brooklyn, NY 11201
Y. Okamoto
Affiliation:
Polytechnic University, Brooklyn, NY 11201
T. Skotheim
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973
Y. S. Pak
Affiliation:
Hunter College of CUNY, New York, NY 10021
S. G. Greenbaum
Affiliation:
Hunter College of CUNY, New York, NY 10021
K. J. Adamic
Affiliation:
Hunter College of CUNY, New York, NY 10021
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Abstract

The synthesis of exclusively cation conducting polymer electrolytes based on a nylon-l backbone, ethylene-oxide side chains, and attached dibutyl phenolate anions is described. The tendency for ion pair formation appears to be reduced as the conductivity of the sodium-containing compound reaches −2 × 10−6 S-cm−1 at 50°C. 23Na nuclear magnetic resonance measurements demonstrate: i) motional narrowing of the mobile Na+ resonance above the glass transition temperature; ii) mobile Na+ concentrations of ∼75% at 40°C; iii) insensitivity of the linewidth to applied hydrostatic pressure up to 2 kbar. Similaries between these findings, and those in “conventional” polymer-salt electrolytes are discussed.

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Type
Research Article
Copyright
Copyright © Materials Research Society 1989

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