Conductivity in amorphous polyether nanocomposite materials

Using a completely amorphous polyether we have investigated the effect of the inclusion of a nano-particulate filler on a polymer electrolyte. Nano-sized TiO 2 is shown not to significantly affect the conductivity of composite electrolytes containing 1.0 or 1.25 mol/kg LiClO 4 or 1.5 or 2.0 mol/kg L...

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Bibliographic Details
Published in:Solid state ionics 1999-11, Vol.126 (3), p.269-276
Main Authors: Best, A.S., Ferry, A., MacFarlane, D.R., Forsyth, M.
Format: Article
Language:English
Subjects:
Amorphous
Applied sciences
Composites
Conductivity
DSC
Exact sciences and technology
Forms of application and semi-finished materials
FT-Raman spectroscopy
Polymer industry, paints, wood
Polymer nanocomposites
Technology of polymers
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Summary:Using a completely amorphous polyether we have investigated the effect of the inclusion of a nano-particulate filler on a polymer electrolyte. Nano-sized TiO 2 is shown not to significantly affect the conductivity of composite electrolytes containing 1.0 or 1.25 mol/kg LiClO 4 or 1.5 or 2.0 mol/kg LiTFSI. At 1.5 mol/kg LiClO 4 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.
ISSN:0167-2738
1872-7689
DOI:10.1016/S0167-2738(99)00239-8