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A 13C NMR study of the role of plasticizers in the conduction mechanism of solid polymer electrolytes
journal contribution
posted on 1995-10-01, 00:00 authored by Maria ForsythMaria Forsyth, P Meakin, D MacFarlaneThe addition of low molecular weight solvents such as dimethyl formamide (DMF) and propylene carbonate (PC) to urethane crosslinked polyethers results in enhancement of polymer segmental motion, as determined in this work from polymer 13C spin lattice relaxation measurements (T1) and glass transition temperatures. The formation of salt-polyether complexes results in a decrease in T1, even in the presence of the plasticizer, indicating that the polymer ether molecules are still involved in the alkali metal coordination. In a polymer electrolyte containing 1 mol kg−1 LiClO4 the addition of DMF and PC have significantly different affects on the polymer mobility, although they both enhance the conductivity. The conductivity enhancement therefore is not solely the result of an increased solvent mobility.
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Journal
Electrochimica actaVolume
40Issue
13-14Pagination
2339 - 2342Publisher
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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