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Na2SO4Al2O3 composite electrolytes: some interesting observations

DSpace at IIT Bombay

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Title Na2SO4Al2O3 composite electrolytes: some interesting observations
 
Creator JAIN, A
SAHA, S
GOPALAN, P
KULKARNI, A
 
Subject electrical-conductivity
ionic-conductivity
solid electrolytes
charge
size
composites
sol-gel chemistry
impedance spectroscopy
x-ray diffraction
ionic conductivity
 
Description In the Na2SO4-Al2O3 system, the variation in electrical conductivity with composition and dispersoid size stands in stark contrast to that of most other reported composite systems. Two maxima, instead of one, are observed in the conductivity vs, composition plot, at 5.5 and 35 mol% Al2O3. Maximum conductivity enhancement is observed for 35 mol% Al2O3. The increase is about 20 times at 400 degreesC and 450 times at 200 degreesC. Possible conductivity enhancement mechanisms operating in this system are suggested. Surprisingly, the reduction in alumina particle size from 0.5 to 0.004 mum does not bring about any further enhancement in conductivity. (C) 2001 . .
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-25T15:46:06Z
2011-12-26T12:57:07Z
2011-12-27T05:46:56Z
2011-08-25T15:46:06Z
2011-12-26T12:57:07Z
2011-12-27T05:46:56Z
2000
 
Type Article
 
Identifier MATERIALS RESEARCH BULLETIN, 35(14-15), 2337-2342
0025-5408
http://dx.doi.org/10.1016/S0025-5408(00)00430-X
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11064
http://hdl.handle.net/10054/11064
 
Language en