Gellan gum-liI gel polymer electrolytes
Document Type
Article
Publication Date
1-1-2012
Abstract
Gellan-based polymer electrolytes (PEs), doped with lithium iodide (LiI), were prepared and their electrical properties were characterized. The samples are thermally stable up to 234 degrees C and exhibit ionic conductivity of 3.8 x 10(-4) S/cm at room temperature for the sample doped with 40 wt% of LiI. Addition of 10 wt% of glycerol promotes an increase of the ionic conductivity to 1.5 x 10(-3) S/cm, which remains stable up to 100 degrees C. The activation energies of 2.4 to 12.4 kJ/mol were derived from the Arrhenius model. The repeated ionic conductivity measurements as a function of temperature show that these membranes can be reversibly used between the room temperature and 100 degrees C.
Keywords
Gellan gum, Ionic conducting membranes, Polymer electrolyte, Blend, Simulation, Battery
Divisions
PHYSICS
Publication Title
Molecular Crystals and Liquid Crystals
Volume
554
Publisher
Taylor & Francis
Additional Information
Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA