Effect of KOH concentration in the gel polymer electrolyte for direct borohydride fuel cell

Ng, P.L. and Mohamad, A.A. and Ahmad, Z.A. and Basirun, Wan Jefrey and Alias, Y. and Jamaludin, A. (2012) Effect of KOH concentration in the gel polymer electrolyte for direct borohydride fuel cell. Journal of Applied Polymer Science, 123 (5). pp. 2662-2666. ISSN 0021-8995

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/app.346...

Abstract

The performance of a direct borohydride fuel cell (DBFC) based on a polyacrylamide (PAAm) gel polymer electrolyte system is investigated at different electrolyte concentrations. The DBFC, constructed using 2M sodium borohydride (NaBH4) as the fuel and potassium hydroxide (KOH) solution gelled with PAAm as the electrolytes yield the highest electrical conductivity of 2.73 x 10-1 S cm-1 at 6M KOH. The optimized composition, PAAm + 2M NaBH4 + 6M KOH, and the selected composition, PAAm + 2M NaBH4 + 3M KOH are then used in preparing the cells. Open-circuit voltages for fuel cells is about 0.85-0.92 V, and the discharge characteristic produce discharge capacities of about 257.12-273.12 mAh cm-2 for cells with PAAm-6M KOH. Current-voltage and current density-power density plots and internal resistance for both cells are almost the same. (c) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

Item Type: Article
Additional Information: Department of Chemistry, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Sodium borohydride, Gel polymer electrolyte, Potassium hydroxide, Alkaline fuel cell, Membranes
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Depositing User: Miss Malisa Diana
Date Deposited: 25 Jul 2013 00:19
Last Modified: 31 Jan 2019 07:59
URI: http://eprints.um.edu.my/id/eprint/7526

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