Properties of ENR-50 based electrolyte system

Zainal, N. and Mohamed, N.S. and Idris, R. (2013) Properties of ENR-50 based electrolyte system. Sains Malaysiana, 42 (4). pp. 481-485. ISSN 0126-6039


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In this work, epoxidized natural rubber 50 (ENR-50) has been used as a host polymer for the preparation of electrolyte system. Attenuated total reflection-fourier transform infrared spectroscopic analyses showed the presence of lithium salt-ENR interactions. The glass transition temperature displayed an increasing trend with the increase in salt concentration indicating that the ionic conductivity was not influenced by segmental motion of the ENR-50 chains. The increase in glass transition temperature with the addition of salt was due to the formation of transient cross-linking between ENR-50 chains via the coordinated interaction between ENR-50 chains and salt. The highest room temperature ionic conductivity obtained was in the order of 10-5 S cm-1 for the film containing 50 wt% of lithium salt. The ionic conductivity of this electrolyte system increased with increasing temperature and obeyed the Vogel-Tamman-Fulcher behavior. The increase in ionic conductivity of the electrolyte system with salt concentration could also be correlated to the charge carriers concentration and/or migration rate of charge carriers.

Item Type:Article
Keywords:Activation energy; conductivity; ENR-50; VTF
Journal:Sains Malaysiana
ID Code:6083
Deposited By: ms aida -
Deposited On:22 Mar 2013 01:54
Last Modified:14 Dec 2016 06:40

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