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Conductivity in amorphous polyether nanocomposite materials

journal contribution
posted on 02.11.1999, 00:00 authored by A Best, A Ferry, D MacFarlane, Maria ForsythMaria Forsyth
Using a completely amorphous polyether we have investigated the effect of the inclusion of a nano-particulate filler on a polymer electrolyte. Nano-sized TiO2 is shown not to significantly affect the conductivity of composite electrolytes containing 1.0 or 1.25 mol/kg LiClO4 or 1.5 or 2.0 mol/kg LiTFSI. At 1.5 mol/kg LiClO4 a significant increase in conductivity is observed. Raman spectroscopy experiments have been used to investigate the effect of filler on ion-aggregation. Only one new vibrational mode can be assigned to the composite which is not due to the polymer electrolyte or the filler. From this work, we believe the increased conductivity observed by previous researchers as a result of filler addition may be largely attributed to the effect on the degree of crystallinity along with some disruption of ion-aggregation by the fillers in PEO based electrolytes.

History

Journal

Solid state ionics

Volume

126

Issue

3-4

Pagination

269 - 276

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0167-2738

eISSN

1872-7689

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1999, Elsevier Science B.V.