Electrical double layer capacitor with proton conducting κ-carrageenanchitosan electrolytes

Shuhaimi, N.E.A. and Alias, Norhatikah A. and Majid, Siti Rohana and Arof, Abdul Kariem (2008) Electrical double layer capacitor with proton conducting κ-carrageenanchitosan electrolytes. Functional Materials Letters, 1 (3). pp. 195-201. ISSN 1793-6047, DOI https://doi.org/10.1142/S1793604708000423.

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Official URL: https://doi.org/10.1142/S1793604708000423


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.

Item Type: Article
Funders: University of Malaya, Ministry of Higher Education Malaysia
Uncontrolled Keywords: Chitosan; κ-carrageenan; supercapacitors; discharge capacitance
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 10 Dec 2020 04:00
Last Modified: 10 Dec 2020 04:00
URI: http://eprints.um.edu.my/id/eprint/25626

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