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Dielectric relaxation and thermal studies on dispersed phase polymer nanocomposite films

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Title Dielectric relaxation and thermal studies on dispersed phase polymer nanocomposite films
 
Creator SHUKLA, N
THAKUR, AK
SHUKLA, A
CHATTERJEE, R
 
Subject LITHIUM ION BATTERIES
AC CONDUCTIVITY
SOLID ELECTROLYTES
CLAY NANOCOMPOSITES
HOPPING RATES
BEHAVIOR
MECHANISM
COMPOSITES
TRANSPORT
SILICA
 
Description Dispersed phase polymer nanocomposite films (PNC) based on PMMA-LiClO4+ n-YSZ, has been prepared. The effect of filler concentration on dielectric constant, tan delta and ac conductivity has been observed. For each PNC films the activation energy for relaxation (E-tau) is almost same as the activation energy for ion conduction (E-a). The dc conductivity, the hopping frequency of charge carriers have been obtained at different temperature from the analysis of the ac conductivity data. For all the PNC films, the concentration of charge carriers has been calculated at different temperature using Almond-West formalism. The estimated activation energies for the dc conductivity and the hopping frequency are different, which indicates that the both charge carrier mobility and concentration contribute significantly to the ionic conductivity of polymeric electrolyte. Contribution of charge carrier mobility to the total conductivity has also been confirmed from the differential scanning calorimetry analysis. Improvement in thermal stability has been noticed with filler addition.
 
Publisher SPRINGER
 
Date 2014-12-28T14:36:51Z
2014-12-28T14:36:51Z
2014
 
Type Article
 
Identifier JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 25(6)2759-2770
0957-4522
1573-482X
http://dx.doi.org/10.1007/s10854-014-1940-0
http://dspace.library.iitb.ac.in/jspui/handle/100/16770
 
Language English