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An nmr investigation of ionic structure and mobility in plasticized solid polymer electrolytes
journal contribution
posted on 1995-10-01, 00:00 authored by Maria ForsythMaria Forsyth, D MacFarlane, P Meakin, M Smith, T Bastow23Na and 19F nuclear magnetic resonance spectroscopy is used to investigate the effect of plasticizer addition on ionic structure and mobility in a urethane crosslinked polyether solid polymer electrolyte. The incorporation of dimethyl formamide and propylene carbonate plasticizers in a sodium triflate/polyether system results in an upfield chemical shift for the 23Na resonance consistent with decreased anion-cation association and increased cation-plasticizer interactions. The 19F resonances appears less susceptible to changes in chemical environment with only minor chemical shift changes recorded. Spin lattice relaxation measurements for the 19F nucleus are also reported. Two minima are observed in the relaxation measurements consistent with both an inter and intramolecular relaxation mechanism.
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Journal
Electrochimica actaVolume
40Issue
13-14Pagination
2343 - 2347Publisher
Elsevier Science Pub. Co.Location
New York, N.Y.Publisher DOI
ISSN
0013-4686eISSN
1873-3859Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
1995, Elsevier Science Ltd.Usage metrics
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