Unexpected effect of tetraglyme plasticizer on lithium ion dynamics in PAMPS based ionomers

Oza, Yogita V., MacFarlane, Douglas R., Forsyth, Maria and O'Dell, Luke A. 2016, Unexpected effect of tetraglyme plasticizer on lithium ion dynamics in PAMPS based ionomers, Physical chemistry chemical physics, vol. 18, no. 28, pp. 19011-19019, doi: 10.1039/c6cp03689a.

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Title Unexpected effect of tetraglyme plasticizer on lithium ion dynamics in PAMPS based ionomers
Author(s) Oza, Yogita V.
MacFarlane, Douglas R.
Forsyth, MariaORCID iD for Forsyth, Maria orcid.org/0000-0002-4273-8105
O'Dell, Luke A.ORCID iD for O'Dell, Luke A. orcid.org/0000-0002-7760-5417
Journal name Physical chemistry chemical physics
Volume number 18
Issue number 28
Start page 19011
End page 19019
Total pages 9
Publisher Royal Society of Chemistry
Place of publication Cambridge, Eng.
Publication date 2016-07-28
ISSN 1463-9084
Summary Li(+) cation conducting ionomers based on poly(2-acrylamido-2-methyl-1-propane sulphonic acid) (PAMPS) incorporating a low molecular weight plasticizer have been characterized. Previously we have observed an apparent decoupling of ionic conductivity and lithium ion dynamics from the Tg of this ionomer along with an increase in ionic conductivity obtained by incorporating a quaternary ammonium co-cation. The incorporation of tetraglyme as a coordinating plasticizer was investigated in order to further improve the ion dissociation and dynamics. Solid-state NMR, thermal analysis, impedance spectroscopy and infrared spectroscopy were used to characterize these systems. As expected, the glass transition temperature Tg decreased upon the addition of the plasticizer. However, in contrast to the previously reported Na-conducting systems, the ionic conductivity was also decreased by several orders of magnitude, indicating that the tetraglyme recouples the conductivity back to the polymer dynamics. Temperature dependent (7)Li NMR line width and T1 measurements were used to probe the Li(+) dynamics, which were found to be dependent on the Li(+) concentration, the nature of the co-cation and the presence or absence of tetraglyme.
Language eng
DOI 10.1039/c6cp03689a
Field of Research 091205 Functional Materials
030607 Transport Properties and Non-equilibrium Processes
02 Physical Sciences
03 Chemical Sciences
Socio Economic Objective 850602 Energy Storage (excl. Hydrogen)
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID FL110100013
Copyright notice ©2016, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30084774

Document type: Journal Article
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