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Physically crosslinked gel electrolytes based on a self-assembling ABA triblock copolymer

Jannasch, Patric LU (2002) In Polymer 43(24). p.6449-6453
Abstract
Gel electrolytes were prepared by swelling a self-assembling ABA triblock copolymer with different amounts of a solution of I M lithium bis(trifluoromethylsulfonyl)imide salt in gamma-butyrolactone. The triblock copolymer had endblocks of polyethylene (PE) and midblocks of poly(ethylene oxide-co-propylene oxide) (PEOPO), where the former blocks constituted 10 wt% of the copolymer. Thus, the electrolyte solution was contained in physical networks consisting of PEOPO chains interconnected by crystalline PE phase domains. The gels showed a stepwise increase in the ionic conductivity as a consequence of the melting of the PE domains at approximately 100 degreesC. Also, the conductivity at room temperature increased significantly after... (More)
Gel electrolytes were prepared by swelling a self-assembling ABA triblock copolymer with different amounts of a solution of I M lithium bis(trifluoromethylsulfonyl)imide salt in gamma-butyrolactone. The triblock copolymer had endblocks of polyethylene (PE) and midblocks of poly(ethylene oxide-co-propylene oxide) (PEOPO), where the former blocks constituted 10 wt% of the copolymer. Thus, the electrolyte solution was contained in physical networks consisting of PEOPO chains interconnected by crystalline PE phase domains. The gels showed a stepwise increase in the ionic conductivity as a consequence of the melting of the PE domains at approximately 100 degreesC. Also, the conductivity at room temperature increased significantly after annealing above this temperature. Block copolymer gels containing 70 wt% of electrolyte solution reached conductivities of 1 mS/cm at 20 degreesC. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Physical triblock copolymer network, Block copolymer gel electrolyte, Ionic conductivity
in
Polymer
volume
43
issue
24
pages
6449 - 6453
publisher
Elsevier
external identifiers
  • wos:000178568900010
  • scopus:0037037573
ISSN
0032-3861
DOI
10.1016/S0032-3861(02)00585-2
language
English
LU publication?
yes
id
290dc350-f8f2-42a8-a210-b1b646fe0981 (old id 150828)
date added to LUP
2007-07-13 12:24:16
date last changed
2017-01-01 07:25:22
@article{290dc350-f8f2-42a8-a210-b1b646fe0981,
  abstract     = {Gel electrolytes were prepared by swelling a self-assembling ABA triblock copolymer with different amounts of a solution of I M lithium bis(trifluoromethylsulfonyl)imide salt in gamma-butyrolactone. The triblock copolymer had endblocks of polyethylene (PE) and midblocks of poly(ethylene oxide-co-propylene oxide) (PEOPO), where the former blocks constituted 10 wt% of the copolymer. Thus, the electrolyte solution was contained in physical networks consisting of PEOPO chains interconnected by crystalline PE phase domains. The gels showed a stepwise increase in the ionic conductivity as a consequence of the melting of the PE domains at approximately 100 degreesC. Also, the conductivity at room temperature increased significantly after annealing above this temperature. Block copolymer gels containing 70 wt% of electrolyte solution reached conductivities of 1 mS/cm at 20 degreesC.},
  author       = {Jannasch, Patric},
  issn         = {0032-3861},
  keyword      = {Physical triblock copolymer network,Block copolymer gel electrolyte,Ionic conductivity},
  language     = {eng},
  number       = {24},
  pages        = {6449--6453},
  publisher    = {Elsevier},
  series       = {Polymer},
  title        = {Physically crosslinked gel electrolytes based on a self-assembling ABA triblock copolymer},
  url          = {http://dx.doi.org/10.1016/S0032-3861(02)00585-2},
  volume       = {43},
  year         = {2002},
}