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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.49 [2011] >
IJPAP Vol.49(09) [September 2011] >
| Title: | Dielectric properties and structural conformation of melt compounded PEO-LiCF3SO3-MMT nanocomposite electrolytes |
| Authors: | Choudhary, Shobhna
Sengwa, R J |
| Keywords: | Nanocomposite electrolytes
Conductivity relaxation
Ionic conductivity
Poly(ethylene oxide)
MMT clay
Lithium triflate |
| Issue Date: | Sep-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Polymer
nanocomposite electrolytes comprising poly(ethylene oxide) (PEO) and lithium
triflate (LiCF3SO3) with varying concentration of
montmorillonite (MMT) nano-platelets as filler were synthesized by direct melt
compounded hot-press technique at PEO melting temperature. The complex
dielectric function, electric modulus, alternating current electrical
conductivity and complex impedance spectra in the frequency range 20 Hz-1 MHz
at ambient temperature have been investigated. The dc conductivity shows
an increase of about one order magnitude with optimum value at 2 wt% MMT. The
correlation of conductivity relaxation time and the predominance of MMT
intercalated structures with dc ionic conductivity in these solid
electrolytes have been recognized, which confirm the potential use of
dielectric relaxation spectroscopy for the online processing of melt compounded
PNCEs materials. |
| Page(s): | 600-605 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.49(09) [September 2011]
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