Conductivity-Temperature Dependent Studies on MG49 Doped Lithium Triflate Salt

Abstract:

This paper reports on the conductivity-temperature studies of gel polymer electrolytes (GPEs) based on 49% poly (methyl methacrylate) grafted-natural rubber (MG49) doped with lithium triflate salt (LiTf) and plasticized with ethylene carbonate (EC). The GPE films are prepared by solution cast technique. The X-ray diffraction (XRD) studies reveal the polymer electrolyte systems are amorphous. AC impedance spectroscopy is carried out in the temperature range between 303 and 373 K. The magnitudes of conductivity observed are strongly dependent on salt concentration and temperature. The high ionic conductivity at elevated temperatures of GPE is attributed to the high ionic mobility of charge carriers. The ionic migration is seen to follow the VTF behavior and approaches to Arrhenius rule at high and low at temperature. Ionic conductivity relaxation appears to be a characteristic of the ionic polarization and the modulus formalism studies confirmed the GPEs in the present investigation are ionic conductors.

• Periodical: Advanced Materials Research (Volume 1107)
• Pages: 181-186
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1107.181
• Online since: June 2015
• Authors: Zaidatul Salwa Mahmud, N.H.M. Zaki, R. Zakaria, Mohamad Faizul Yahya, Abdul Malik Marwan Bin Ali*
• Keywords: 49% PMMA-g-Nr, Conductivity, GPEs

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