Title of article
Ionic Conductivity of PEMA-LiClO4 Polymer Electrolytes
Author/Authors
Amir, S. N. International Islamic University of Malaysia - Centre for Foundation Studies - Department of Engineering, Malaysia , Othman, R. International Islamic University of Malaysia - Department of Sciences, Kuliyyah of Engineering, Malaysia , Subban, R. H. Y. Universiti Teknologi MARA - Faculty of Applied Sciences, Malaysia , Mohamed, N. S. university of malaya - Centre for Foundation Studies in Science, Malaysia
From page
701
To page
705
Abstract
Solid polymer electrolytes comprised of various weight percent ratios of poly(ethyl methacrylate) (PEMA) and lithium perchlorate (LiClO4) salt were prepared via solution casting technique using N,N-dimethylformamide (DMF) as the solvent. The conductivity values of the electrolytes were determined via impedance spectroscopy. The conductivity of the PEMA-LiClO4 electrolytes increased with increasing salt concentration and the highest conductivity obtained was in the order of 10-6 S cm-1 at salt concentration of 20 wt%. The conductivity decreased for higher salt concentration. In order to understand the conductivity behavior, XRD and dielectric studies were done. The results showed that the conductivity was influenced by the fraction of amorphous region and number of charge carriers in the system. The transference number measurement was also performed on the highest conducting electrolyte systems. The result of the measurement indicated that the systems were ionic conductors
Keywords
Dielectric constant , impedance spectroscopy , Scherrer length
Record number
2555195
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