Publication: Preparation and characterization of solid polymeric electrolyte of poly(vinyl) chloride-low-molecular weight LENR50 (70/30)-LiClO 4
Date
2012
Authors
Lee T.K.
Ahmad A.
Farina Y.
Dahlan H.M.
Rahman M.Y.A.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
This work presents the preparation of a free standing electrolyte film containing poly(vinyl) chloride (PVC) and 50% liquid epoxidized natural rubber (LENR50) blends as a host for the electrolyte that was doped with lithium perchlorate (LiClO 4) as the dopant salt. The electrolyte was prepared via solution-casting technique. From the impedance result, the highest ionic conductivity obtained was 9.6 � 10 -9 S cm -1 at the 30 wt % of LiClO 4. This ionic conductivity result was supported by XRD analysis that showed the addition of 5-30 wt % of LiClO 4 salt to the PVC-LENR50 was well dissociated in the electrolyte as no salt peaks were observed. This implies that the salt was fully complexed in the system. Thermal analysis revealed that T g increased with lithium salts concentration. This is due to the formation of transient crosslinkage bonds and increasing viscosity. The morphological studies revealed the good homogeneity of the PVC-LENR50 (70/30) blend as no phase separation was observed. In addition, the formation of micropores with an addition of salts in the electrolyte improved the mobility properties of Li + ions in the electrolyte system. Hence, it improves the ionic conductivity. � 2012 Wiley Periodicals, Inc.
Description
Keywords
ionic conductivity , LENR50 , LiClO <sub>4</sub> , polymer electrolyte , PVC , Chlorine compounds , Film preparation , Inorganic compounds , Ionic conductivity , Lithium , Phase separation , Polymers , Polymethyl methacrylates , Polyvinyl chlorides , Salts , Thermoanalysis , Cross-linkage , Dopant salt , Electrolyte films , Electrolyte systems , Epoxidized natural rubber , Increasing viscosity , LENR50 , , Lithium perchlorate , Lithium salts , Micropores , Mobility properties , Morphological study , Polymer electrolyte , Solid polymeric electrolytes , Solution-casting technique , XRD analysis , Electrolytes