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Title: Polymer electrolytes based on unsaturated ethylene oxide-segmented polymers

Abstract

Polymer electrolytes were prepared from LiClO{sub 4} and high molecular weight unsaturated ethylene oxide-segmented polymers with the generic formula {minus}[(CH{sub 2}){sub x}CH{double{underscore}bond}CH(CH{sub 2}){sub x}O(CH{sub 2}CH{sub 2}O){sub y}]{sub n}--([C{sub x}{pi}C{sub x}EO{sub y}]{sub n}). Synthesized by metathesis polymerization of {alpha}, {omega}-dienes that contain oligomeric poly(ethylene oxide) cores, these polymers are tacky, adhere well to glass and metal surfaces, and have glass transition temperatures between {minus}70 and {minus}80 C. Polymers that contain relatively long alkyl or polyether segments are crystalline below room temperature, but adding LiClO{sub 4} to the polymers converts them to amorphous polymer electrolytes with room-temperature conductivities (20 C) of {approx}2 x 10{sup {minus}5} S/cm. The T{sub g}s of the materials can be fit by a simple model based on the Fox equation, and an analysis of the results indicates that the Li{sup +}:monomer repeat unit stoichiometry is 1:1 for polymers with long block lengths, and decreases to 1:2 for polymers with poly(ethylene oxide) segments with less than 4 repeat units.

Authors:
; ;
Publication Date:
Research Org.:
Michigan State Univ., East Lansing, MI (US)
OSTI Identifier:
20001175
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 11; Journal Issue: 9; Other Information: PBD: Sep 1999; Journal ID: ISSN 0897-4756
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SOLID ELECTROLYTES; POLYETHYLENE GLYCOLS; TRANSITION TEMPERATURE; ADHESION; ELECTRIC CONDUCTIVITY

Citation Formats

Qiao, J., Chen, Y., and Baker, G.L. Polymer electrolytes based on unsaturated ethylene oxide-segmented polymers. United States: N. p., 1999. Web. doi:10.1021/cm990250i.
Qiao, J., Chen, Y., & Baker, G.L. Polymer electrolytes based on unsaturated ethylene oxide-segmented polymers. United States. doi:10.1021/cm990250i.
Qiao, J., Chen, Y., and Baker, G.L. Wed . "Polymer electrolytes based on unsaturated ethylene oxide-segmented polymers". United States. doi:10.1021/cm990250i.
@article{osti_20001175,
title = {Polymer electrolytes based on unsaturated ethylene oxide-segmented polymers},
author = {Qiao, J. and Chen, Y. and Baker, G.L.},
abstractNote = {Polymer electrolytes were prepared from LiClO{sub 4} and high molecular weight unsaturated ethylene oxide-segmented polymers with the generic formula {minus}[(CH{sub 2}){sub x}CH{double{underscore}bond}CH(CH{sub 2}){sub x}O(CH{sub 2}CH{sub 2}O){sub y}]{sub n}--([C{sub x}{pi}C{sub x}EO{sub y}]{sub n}). Synthesized by metathesis polymerization of {alpha}, {omega}-dienes that contain oligomeric poly(ethylene oxide) cores, these polymers are tacky, adhere well to glass and metal surfaces, and have glass transition temperatures between {minus}70 and {minus}80 C. Polymers that contain relatively long alkyl or polyether segments are crystalline below room temperature, but adding LiClO{sub 4} to the polymers converts them to amorphous polymer electrolytes with room-temperature conductivities (20 C) of {approx}2 x 10{sup {minus}5} S/cm. The T{sub g}s of the materials can be fit by a simple model based on the Fox equation, and an analysis of the results indicates that the Li{sup +}:monomer repeat unit stoichiometry is 1:1 for polymers with long block lengths, and decreases to 1:2 for polymers with poly(ethylene oxide) segments with less than 4 repeat units.},
doi = {10.1021/cm990250i},
journal = {Chemistry of Materials},
issn = {0897-4756},
number = 9,
volume = 11,
place = {United States},
year = {1999},
month = {9}
}