Effect of complexing salt on conductivity of PVC/PEO polymer blend electrolytes

Solid polymer electrolyte membrane comprising poly(vinyl chloride) (PVC), poly(ehylene oxide) (PEO) and different lithium salts (LiClO 4 , LiBF 4 and LiCF 3 SO 3 ) were prepared by the solution casting technique. The effect of complexing salt on the ionic conductivity of the PVC/PEO host polymer is...

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Bibliographic Details
Published in:Bulletin of materials science 2011-12, Vol.34 (7), p.1525-1530
Main Authors: Rajendran, S., Babu, Ravi Shanker, Usha Rani, M.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Differential thermal analysis
Electrolytes
Engineering
Ion currents
Lithium
Materials Science
Molten salt electrolytes
Polymer films
Polymers
Polyvinyl chloride
Room temperature
Solid electrolytes
Temperature dependence
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Summary:Solid polymer electrolyte membrane comprising poly(vinyl chloride) (PVC), poly(ehylene oxide) (PEO) and different lithium salts (LiClO 4 , LiBF 4 and LiCF 3 SO 3 ) were prepared by the solution casting technique. The effect of complexing salt on the ionic conductivity of the PVC/PEO host polymer is discussed. Solid polymer electrolyte films were characterized by X-ray diffraction, FTIR spectroscopy, TG/DTA and ac impedance spectroscopic studies. The conductivity studies of these solid polymer electrolyte (SPE) films are carried out as a function of frequency at various temperatures ranging from 302 K to 353 K. The maximum room temperature ionic conductivity is found to be 0·079 × 10 −4 S cm −1 for the film containing LiBF 4 as the complexing salt. The temperature dependence of the conductivity of polymer electrolyte films seems to obey the Vogel-Tamman-Fulcher (VTF) relation.
ISSN:0250-4707
0973-7669
DOI:10.1007/s12034-011-0354-3