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An nmr investigation of ionic structure and mobility in plasticized solid polymer electrolytes

journal contribution
posted on 01.10.1995, 00:00 authored by Maria ForsythMaria Forsyth, D MacFarlane, P Meakin, M Smith, T Bastow
23Na 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.

History

Journal

Electrochimica acta

Volume

40

Issue

13-14

Pagination

2343 - 2347

Publisher

Elsevier Science Pub. Co.

Location

New York, N.Y.

ISSN

0013-4686

eISSN

1873-3859

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1995, Elsevier Science Ltd.