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Conductivity and Ftir Studies on Pva/Chitosan-LiCF3SO3

Razak N.A.A., and Winie, T., and Ghani, F.S.A., and Ahmad A.H., (2008) Conductivity and Ftir Studies on Pva/Chitosan-LiCF3SO3. Solid State Science and Technology, 16 (1). pp. 1-7. ISSN 0128-7389

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Official URL: http://mass-malaysia.net/webjournal/wp-content/uploads/2008/Journal%20MASS%202008%20Jilid%201%20pdf/N.A.A.%20Razak%201-7.pdf

Affiliations

Universiti Teknologi MARA. Institute of Sciences
Universiti Teknologi MARA. Institute of Sciences
Universiti Teknologi MARA. Institute of Sciences
Universiti Teknologi MARA. Institute of Sciences

Abstract

New polymer electrolytes using Chitosan and Poly(vinyl alcohol)[PVA] with different weight percent (wt%) have been prepared using solution cast technique. The low conductivity of this system (S/cm) was enhanced due to the dissociation of lithium trifluoromethanesulfonate (LiCF3SO3) added to the blend. The ac conductivity of the polymer electrolytes has been investigated by using impedance spectroscopy method in the frequency range of 100 kHz to 5 MHz at room temperature. Result for conductivity studies has shown that the sample with 45% lithium trifluoromethanesulfonate exhibits the highest conductivity of 1.241 x 10-4 S/cm at room temperature. The enhanced conductivity observed was due to complexation occurred between the Li+ cation and the lone pair electron of the nitrogen (N) and oxygen (O) atoms present in the polymer blend. Infrared spectroscopy was employed to confirm the polymer-salt complexation.

Item Type:Journal
Keywords:solution cast, polymer electrolytes,polymer electrolytes
Subjects:Q Science, Computer Science
ID Code:10816

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