Application of chitosan/iota-carrageenan polymer electrolytes in electrical double layer capacitor (EDLC)
Document Type
Article
Publication Date
1-1-2010
Abstract
In this work, a chitosan/iota (iota)-carrageenan blended film doped with orthophosphoric acid (H(3)PO(4)) as ionic dopant and poly(ethylene glycol) (PEG) as plasticizer has been used as a separator and electrolyte in an electrical double layer capacitor (EDLC). A set of samples were prepared by the solution cast technique to see the effect of the different weight ratios of the proton donor and plasticizer on the conductivity. The highest conducting sample has composition 37.50 wt.% chitosan-37.50 wt.% iota-carrageenan-18.75 wt.% H(3)PO(4)-6.25 wt.% PEG. The conductivity value is 6.29 x 10(-4) S cm(-1). The conductivity-temperature relationship is Arrhenian, and the activation energy for the highest conducting sample is 0.09 eV. The specific discharge capacitance of the EDLC is 35 F g(-1) at 0.11 mA cm(-2) current drain and was constant for 30 cycles.
Keywords
Chitosan, Iota-carrageenan, Edlc, Discharge capacitance, Activated carbon, Electrochemical properties, Blend electrolytes, Solid-electrolyte, Miscibility, Conductivity cyclic voltammetry, Temperature, Performance, Membranes, Supercapacitors
Divisions
PHYSICS
Publication Title
Journal of Solid State Electrochemistry
Volume
14
Issue
12
Publisher
Springer Verlag (Germany)
Additional Information
Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA