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Ionic Conductivity and Dielectric Properties of Poly(ethylene oxide) Graft Copolymers End-capped with Sulfonic Acid

Dérand, Helene; Wesslén, Bengt LU and Mellander, Bengt-Erik (1998) In Electrochimica Acta 43(10-11). p.1525-1531
Abstract
Both anions and cations are mobile and carry the electrical charge in most polymer electrolytes. A single ion conductor with purely cationic conduction can be realized by incorporation of the anion into the polymer chain. In order to obtain pure lithium ion conductors we prepared two types of graft copolymers, namely poly(amide 12-graft-ethylene oxide) and poly(ethylene-co-vinyl alcohol-gr aft-ethylene oxide), respectively, and end-capped the poly(ethylene oxide) grafts with sulfonic acid groups. Lithium salts of the graft copolymers were made by neutralizing the sulfonic acid groups with lithium hydroxide. Films of the neutralized polymers were prepared by solution casting. The thermal properties of the films were evaluated from DSC... (More)
Both anions and cations are mobile and carry the electrical charge in most polymer electrolytes. A single ion conductor with purely cationic conduction can be realized by incorporation of the anion into the polymer chain. In order to obtain pure lithium ion conductors we prepared two types of graft copolymers, namely poly(amide 12-graft-ethylene oxide) and poly(ethylene-co-vinyl alcohol-gr aft-ethylene oxide), respectively, and end-capped the poly(ethylene oxide) grafts with sulfonic acid groups. Lithium salts of the graft copolymers were made by neutralizing the sulfonic acid groups with lithium hydroxide. Films of the neutralized polymers were prepared by solution casting. The thermal properties of the films were evaluated from DSC measurements. Complex impedance spectroscopy gave information on the ionic conductivity and dielectric relaxations. The highest conductivity, at 80 degrees C, 2*10(-5) S/cm was obtained for poly(amide 12-graft-ethylene oxide). (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
anionic graft copolymer, single ion conductor, dielectric relaxation, polymer electrolyte
in
Electrochimica Acta
volume
43
issue
10-11
pages
1525 - 1531
publisher
Pergamon
external identifiers
  • scopus:0032317135
ISSN
0013-4686
language
English
LU publication?
yes
id
a218a2d1-a5c3-41e9-817e-159dc8e084fa (old id 34974)
date added to LUP
2007-06-19 14:31:42
date last changed
2017-08-13 03:48:36
@article{a218a2d1-a5c3-41e9-817e-159dc8e084fa,
  abstract     = {Both anions and cations are mobile and carry the electrical charge in most polymer electrolytes. A single ion conductor with purely cationic conduction can be realized by incorporation of the anion into the polymer chain. In order to obtain pure lithium ion conductors we prepared two types of graft copolymers, namely poly(amide 12-graft-ethylene oxide) and poly(ethylene-co-vinyl alcohol-gr aft-ethylene oxide), respectively, and end-capped the poly(ethylene oxide) grafts with sulfonic acid groups. Lithium salts of the graft copolymers were made by neutralizing the sulfonic acid groups with lithium hydroxide. Films of the neutralized polymers were prepared by solution casting. The thermal properties of the films were evaluated from DSC measurements. Complex impedance spectroscopy gave information on the ionic conductivity and dielectric relaxations. The highest conductivity, at 80 degrees C, 2*10(-5) S/cm was obtained for poly(amide 12-graft-ethylene oxide).},
  author       = {Dérand, Helene and Wesslén, Bengt and Mellander, Bengt-Erik},
  issn         = {0013-4686},
  keyword      = {anionic graft copolymer,single ion conductor,dielectric relaxation,polymer electrolyte},
  language     = {eng},
  number       = {10-11},
  pages        = {1525--1531},
  publisher    = {Pergamon},
  series       = {Electrochimica Acta},
  title        = {Ionic Conductivity and Dielectric Properties of Poly(ethylene oxide) Graft Copolymers End-capped with Sulfonic Acid},
  volume       = {43},
  year         = {1998},
}