Ionic conductivity of PEMA-LiClO4 polymer electrolytes

Amir, Shahrul and Othman, Raihan and Subban, Ri Hanum Yahaya and Mohamed, Nor Sabirin (2011) Ionic conductivity of PEMA-LiClO4 polymer electrolytes. Sains Malaysiana, 40 (7). pp. 701-705. ISSN 0126-6039

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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.

Item Type:	Article (Journal)
Additional Information:	2593/2908
Uncontrolled Keywords:	Dielectric constant; impedance spectroscopy; Scherrer lenght
Subjects:	Q Science > QC Physics T Technology > TJ Mechanical engineering and machinery > TJ807 Renewable energy sources T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2896 Production of electricity by direct energy conversion T Technology > TP Chemical technology > TP250 Industrial electrochemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Science
Depositing User:	Raihan Othman
Date Deposited:	13 Sep 2011 13:31
Last Modified:	27 Dec 2011 15:00
URI:	http://irep.iium.edu.my/id/eprint/2908

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