Electrical double layer capacitor with proton conducting κ-carrageenanchitosan electrolytes
Document Type
Article
Publication Date
1-1-2008
Abstract
Charge–discharge characteristics of electrical double layer capacitors (EDLCs) using κ-carrageenan–chitosan based electrolyte is the focus of the present work. Chitosan and κ-carrageenan were blended to obtain films with high mechanical strength. The room temperature conductivity of 0.5 g chitosan + 0.5 g κ-carrageenan (CCPA) film and 0.5 g chitosan + 0.5 g κ-carrageenan + 0.1765 g ammonium nitrate (CCPAAN) film are (1.38 ± 0.36) × 10-6S cm-1 and (2.39 ± 0.83) × 10-4S cm-1, respectively. The conducting species is H+ and conduction occurs via a Grotthuss mechanism. The resistance of the phenol resin based activated carbon electrode film is between 15 to 20 Ω. The capacitance of the EDLCs is stable over 20 cycles. The average discharge capacitance of the EDLC employing CCPAAN electrolyte and activated carbon electrodes is between 13 to 18.5 F g-1.
Keywords
Chitosan, κ-carrageenan, supercapacitors, discharge capacitance
Divisions
PHYSICS
Funders
University of Malaya,Ministry of Higher Education Malaysia
Publication Title
Functional Materials Letters
Volume
1
Issue
3
Publisher
World Scientific Publishing