Advanced

Ion conducting electrolytes based on aggregating comblike poly(propylene oxide)

Jannasch, Patric LU (2001) In Polymer 42(21). p.8629-8635
Abstract
Solid and gel electrolytes based on comblike poly(propylene oxide) (PPO) have been prepared and studied. The polymer consisted of a polyethylene backbone densely grafted with PPO side chains terminated by hexadecanoyl chain ends. Analysis by impedance spectroscopy of the solid polymer electrolytes containing lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) salt showed ion conductivities of 10(-5.5) S cm(-1) at 20 degreesC. The ion conductivity of polymer gel electrolytes containing 1 M LiTFSI in gamma -butyrolactone (gamma -BL) reached 10(-3.0) S cm(-1) at 20 degreesC with 50 wt% of electrolyte solution added. Thermal analysis showed that the comblike PPO aggregated through microphase separation of the hexadecanoyl units in both the... (More)
Solid and gel electrolytes based on comblike poly(propylene oxide) (PPO) have been prepared and studied. The polymer consisted of a polyethylene backbone densely grafted with PPO side chains terminated by hexadecanoyl chain ends. Analysis by impedance spectroscopy of the solid polymer electrolytes containing lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) salt showed ion conductivities of 10(-5.5) S cm(-1) at 20 degreesC. The ion conductivity of polymer gel electrolytes containing 1 M LiTFSI in gamma -butyrolactone (gamma -BL) reached 10(-3.0) S cm(-1) at 20 degreesC with 50 wt% of electrolyte solution added. Thermal analysis showed that the comblike PPO aggregated through microphase separation of the hexadecanoyl units in both the solid and the gel electrolytes. This microphase had multiple melting points in the temperature interval between -45 and 40 degreesC. Furthermore, the crystallisation of gamma -BL was greatly suppressed in gel electrolytes. A study of the gel electrolytes by FT-IR spectroscopy implied that the lithium ions were preferentially coordinated by the PPO grafts, and not by gamma -BL. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Gel electrolyte, Comb polymer, Poly(propylene oxide)
in
Polymer
volume
42
issue
21
pages
8629 - 8635
publisher
Elsevier
external identifiers
  • scopus:0035973974
ISSN
0032-3861
DOI
10.1016/S0032-3861(01)00373-1
language
English
LU publication?
yes
id
3959cc56-f966-4551-ae2a-ca054ed3b68b (old id 150794)
date added to LUP
2007-07-13 12:20:14
date last changed
2018-10-03 11:51:17
@article{3959cc56-f966-4551-ae2a-ca054ed3b68b,
  abstract     = {Solid and gel electrolytes based on comblike poly(propylene oxide) (PPO) have been prepared and studied. The polymer consisted of a polyethylene backbone densely grafted with PPO side chains terminated by hexadecanoyl chain ends. Analysis by impedance spectroscopy of the solid polymer electrolytes containing lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) salt showed ion conductivities of 10(-5.5) S cm(-1) at 20 degreesC. The ion conductivity of polymer gel electrolytes containing 1 M LiTFSI in gamma -butyrolactone (gamma -BL) reached 10(-3.0) S cm(-1) at 20 degreesC with 50 wt% of electrolyte solution added. Thermal analysis showed that the comblike PPO aggregated through microphase separation of the hexadecanoyl units in both the solid and the gel electrolytes. This microphase had multiple melting points in the temperature interval between -45 and 40 degreesC. Furthermore, the crystallisation of gamma -BL was greatly suppressed in gel electrolytes. A study of the gel electrolytes by FT-IR spectroscopy implied that the lithium ions were preferentially coordinated by the PPO grafts, and not by gamma -BL.},
  author       = {Jannasch, Patric},
  issn         = {0032-3861},
  keyword      = {Gel electrolyte,Comb polymer,Poly(propylene oxide)},
  language     = {eng},
  number       = {21},
  pages        = {8629--8635},
  publisher    = {Elsevier},
  series       = {Polymer},
  title        = {Ion conducting electrolytes based on aggregating comblike poly(propylene oxide)},
  url          = {http://dx.doi.org/10.1016/S0032-3861(01)00373-1},
  volume       = {42},
  year         = {2001},
}