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Amphiphilic solid polymer electrolytes

Gavelin, Patrik LU ; Ljungbäck, Ronnie; Jannasch, Patric LU and Wesslén, Bengt LU (2002) Polymer Electrolytes Symposium 2001 (PES2001) In Solid State Ionics 147(3-4). p.325-332
Abstract
Amphiphilic graft copolymers consisting of methacrylate backbones carrying approximately 48 wt.% of ethylene oxide [(EO)(9) or (EO)(23)] side chains as ionophilic groups and fluorocarbon or hydrocarbon side chains as ionophobic groups were prepared. Solid polymer electrolytes based on the copolymers and lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) were characterized by DSC and the impedance spectroscopy. A maximum ion conductivity of 8 x 10(-5) S cm(-1) at 60 degreesC was found for a polymer electrolyte based on a copolymer having hydrocarbon side chains and (EO)(23) side chains, despite an EO content of only 50 wt.%. No (EO)(n) side chain crystallinity in the electrolytes was detected by calorimetry. The hydrocarbon side chains, on... (More)
Amphiphilic graft copolymers consisting of methacrylate backbones carrying approximately 48 wt.% of ethylene oxide [(EO)(9) or (EO)(23)] side chains as ionophilic groups and fluorocarbon or hydrocarbon side chains as ionophobic groups were prepared. Solid polymer electrolytes based on the copolymers and lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) were characterized by DSC and the impedance spectroscopy. A maximum ion conductivity of 8 x 10(-5) S cm(-1) at 60 degreesC was found for a polymer electrolyte based on a copolymer having hydrocarbon side chains and (EO)(23) side chains, despite an EO content of only 50 wt.%. No (EO)(n) side chain crystallinity in the electrolytes was detected by calorimetry. The hydrocarbon side chains, on the other hand, were found to form a crystalline phase in the electrolytes. The melting of this phase was not reflected in the shape of the Arrhenius conductivity plot. This indicated that the segmental mobility in the ion conducting phase did not decrease as a result of the presence of the crystalline hydrocarbon phase. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Crystallization, Macromonomer polymerization, Graft copolymer, Phase separation, Lithium bis(trifluoromethylsulfonyl)imide, Solid polymer electrolyte
in
Solid State Ionics
volume
147
issue
3-4
pages
325 - 332
publisher
Elsevier
conference name
Polymer Electrolytes Symposium 2001 (PES2001)
external identifiers
  • wos:000175219600017
  • scopus:0036534346
ISSN
1872-7689
0167-2738
DOI
10.1016/S0167-2738(02)00020-6
language
English
LU publication?
yes
id
67faac96-42e4-41c4-8e04-a359fbf9a47c (old id 150805)
date added to LUP
2007-11-27 13:08:52
date last changed
2017-01-01 04:36:58
@inproceedings{67faac96-42e4-41c4-8e04-a359fbf9a47c,
  abstract     = {Amphiphilic graft copolymers consisting of methacrylate backbones carrying approximately 48 wt.% of ethylene oxide [(EO)(9) or (EO)(23)] side chains as ionophilic groups and fluorocarbon or hydrocarbon side chains as ionophobic groups were prepared. Solid polymer electrolytes based on the copolymers and lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) were characterized by DSC and the impedance spectroscopy. A maximum ion conductivity of 8 x 10(-5) S cm(-1) at 60 degreesC was found for a polymer electrolyte based on a copolymer having hydrocarbon side chains and (EO)(23) side chains, despite an EO content of only 50 wt.%. No (EO)(n) side chain crystallinity in the electrolytes was detected by calorimetry. The hydrocarbon side chains, on the other hand, were found to form a crystalline phase in the electrolytes. The melting of this phase was not reflected in the shape of the Arrhenius conductivity plot. This indicated that the segmental mobility in the ion conducting phase did not decrease as a result of the presence of the crystalline hydrocarbon phase.},
  author       = {Gavelin, Patrik and Ljungbäck, Ronnie and Jannasch, Patric and Wesslén, Bengt},
  booktitle    = {Solid State Ionics},
  issn         = {1872-7689},
  keyword      = {Crystallization,Macromonomer polymerization,Graft copolymer,Phase separation,Lithium bis(trifluoromethylsulfonyl)imide,Solid polymer electrolyte},
  language     = {eng},
  number       = {3-4},
  pages        = {325--332},
  publisher    = {Elsevier},
  title        = {Amphiphilic solid polymer electrolytes},
  url          = {http://dx.doi.org/10.1016/S0167-2738(02)00020-6},
  volume       = {147},
  year         = {2002},
}