Ionic Conductivity and Dielectric Properties of Poly(ethylene oxide) Graft Copolymers End-capped with Sulfonic Acid
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/34974
- author
- Dérand, Helene ; Wesslén, Bengt LU and Mellander, Bengt-Erik
- organization
- publishing date
- 1998
- 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 Press Ltd.
- 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
- 2016-04-01 12:37:07
- date last changed
- 2022-01-27 07:33:55
@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}},
keywords = {{anionic graft copolymer; single ion conductor; dielectric relaxation; polymer electrolyte}},
language = {{eng}},
number = {{10-11}},
pages = {{1525--1531}},
publisher = {{Pergamon Press Ltd.}},
series = {{Electrochimica Acta}},
title = {{Ionic Conductivity and Dielectric Properties of Poly(ethylene oxide) Graft Copolymers End-capped with Sulfonic Acid}},
volume = {{43}},
year = {{1998}},
}