Electrical conductivity studies of polyvinyl chloride-based electrolytes with double salt system

Ramesh, Subramaniam and Arof, Abdul Kariem (2000) Electrical conductivity studies of polyvinyl chloride-based electrolytes with double salt system. Solid State Ionics, 136-13 (1-2). pp. 1197-1200. ISSN 0167-2738

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Official URL: https://doi.org/10.1016/S0167-2738(00)00598-1

Abstract

Polyvinyl chloride (PVC) has electrical conductivity of approximately 10-8 S cm-1. It can serve as a host matrix for solvating lithium salts. The highest room temperature electrical conductivity of 5.2 μS cm-1 for a double salt system was achieved for the composition 50 wt% PVC:15 wt% LiCF3SO3:35 wt% LiBF4. The addition of a plasticizer, ethylene carbonate (EC) and/or propylene carbonate (PC) to the above polymer-salt complex helps to increase the ambient electrical conductivity of the electrolyte. It was found that for the complex containing 40 wt% EC, the room temperature electrical conductivity of the 50 wt% PVC:15 wt% LiCF3SO3:35 wt% LiBF4 sample only increased by a factor of about 1.2. Equal amounts of PVC powder were then subjected to different doses of γ-irradiation. The PVC powders were then used to make different films with composition [50 wt% PVC+15 wt% LiCF3SO3+35 wt% LiBF4]0.6+[100 wt% EC]0.4. The film containing the PVC powder irradiated with a dose of approximately 104 Gy of γ-irradiation exhibits the highest conductivity of 450 μS cm-1. A double plasticizer system was also prepared and the sample containing the ratio PC/EC approximately 7 exhibits the highest electrical conductivity of 2.6 mS cm-1. Hence in this work, it has been shown that the conductivity of the double salt system can be improved by γ-irradiation and using double plasticizers.

Item Type: Article
Uncontrolled Keywords: Electric conductivity of solids; Irradiation; Lithium compounds; Plastic films; Plasticizers; Polyvinyl chlorides; Powders; Salts
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 02 Sep 2021 04:02
Last Modified: 02 Sep 2021 04:02
URI: http://eprints.um.edu.my/id/eprint/26023

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