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Engineering polymer electrolytes with enhanced ionic conduction

DSpace at IIT Bombay

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Title Engineering polymer electrolytes with enhanced ionic conduction
 
Creator KULKARNI, AR
 
Subject poly(ethylene oxide)
lithium perchlorate
temperature
complexes
blends
polymer electrolytes
tonic conductivity
amorphous polymers
plasticisers
 
Description This paper describes our strategies to engineer amorphous polymer-salt complexes and investigate their electrical behavior. In the first approach, semicrystalline polymer polyoxyethylene (POE) was plasticised using amorphous polyoxypropyleneglycol (POPG) in the presence of sodium salts. In the second approach. amorphous polymers, poly(bis(methoxyethoxyethoxy phosphazene)) (MEEP) and polysiloxane, were used to synthesise electrolytes. These were complexed with sodium salts and a small amount of polyoxyethylene. The nature of each complex was ascertained from optical microscopy, X-ray diffraction (XRD) and Differential Scanning Calorimetry (DSC) in these systems. The polymer-salt complexes, in the first approach, revealed a well-defined glass formation region in which all the compositions were amorphous and showed unusually high ionic conductivity similar to 10(-4) (Omega cm)(-1) at ambient temperature. The electrolytes in the second approach showed a maximum conductivity of similar to 10(-5) (Omega cm)(-1). However, truly amorphous compositions could not he obtained. The first approach of engineering reduction in crystalline phases appeared more effective in enhancing ionic conductivity. (C) 2000 Elsevier Science B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-10-22T16:13:19Z
2011-12-15T09:10:40Z
2011-10-22T16:13:19Z
2011-12-15T09:10:40Z
2000
 
Type Article; Proceedings Paper
 
Identifier SOLID STATE IONICS,136,549-558
0167-2738
http://dx.doi.org/10.1016/S0167-2738(00)00413-6
http://dspace.library.iitb.ac.in/xmlui/handle/10054/14940
http://hdl.handle.net/100/1580
 
Source 12th International Conference on Solid State Ionics,HALKIDIKI, GREECE,JUN 06-12, 1999
 
Language English