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Characterisation of ion transport in sulfonate based ionomer systems containing lithium and quaternary ammonium cations

Oza, Yogita V., MacFarlane, Douglas R., Forsyth, Maria and O'Dell, Luke 2015, Characterisation of ion transport in sulfonate based ionomer systems containing lithium and quaternary ammonium cations, Electrochimica acta, vol. 175, pp. 80-86, doi: 10.1016/j.electacta.2015.03.218.

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Title Characterisation of ion transport in sulfonate based ionomer systems containing lithium and quaternary ammonium cations
Author(s) Oza, Yogita V.
MacFarlane, Douglas R.
Forsyth, MariaORCID iD for Forsyth, Maria orcid.org/0000-0002-4273-8105
O'Dell, LukeORCID iD for O'Dell, Luke orcid.org/0000-0002-7760-5417
Journal name Electrochimica acta
Volume number 175
Start page 80
End page 86
Total pages 7
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015
ISSN 0013-4686
Keyword(s) Conductivity
Electrolytes
Ionomers
NMR
Polymers
Summary Two sulfonated ionomers based on poly(triethylmethyl ammonium 2-acrylamido-2-methyl-1-propane sulfonic acid) (PAMPS) and containing mixtures of Li+ and quaternary ammonium cations are characterised. The first system contains Li+ and the methyltriethyl ammonium cation (N1222) in a 1:9 molar ratio, and the 7Li NMR line widths showed that the Li+ ions are mobile in this system below the glass transition temperature (105°C) and are therefore decoupled from the polymer segmental motion. The conductivity in this system was measured as 10-5 Scm-1 at 130°C. A second PAMPS system containing Li+ and the dimethylbutylmethoxyethyl ammonium cation (N114(2O1)) in a 2:8 molar ratio showed much lower conductivities despite a significantly lower Tg (60°C), possibly due to associations between the Li+ and the ether group on the ammonium cation, or between the latter cations and the sulfonate groups.
Language eng
DOI 10.1016/j.electacta.2015.03.218
Field of Research 030304 Physical Chemistry of Materials
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30072632

Document type: Journal Article
Collection: Institute for Frontier Materials
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Created: Mon, 07 Sep 2015, 11:54:45 EST

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