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A hybrid enzymatic zinc-air fuel cell

Ahmad, Abdul Aziz and Othman, Raihan and Yusof, Faridah and Abd Wahab, Mohd Firdaus (2014) A hybrid enzymatic zinc-air fuel cell. Sains Malaysiana, 43 (3). pp. 459-465. ISSN 0126-6039

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Abstract

A hybrid biofuel cell, a zinc-air cell employing laccase as the oxygen reduction catalyst is investigated. A simple cell design is employed; a membraneless single chamber and a freely suspended laccase in the buffer electrolyte. The cell is characterised based on its open-circuit voltage, power density profile and galvanostatic discharge at 0.5 mA. The activity of laccase as an oxidoreductase is substantiated from the cell discharge profiles. The use of air electrode in the cell design enhanced the energy output by 14%. The zinc-air biofuel cell registered an open-circuit voltage of 1.2 V and is capable to deliver a maximum power density of 1.1 mWcm-2 at 0.4 V. Despite its simple design features, the power output is comparable to that of biocatalytic cell utilising a much more complex system design.

Item Type: Article (Journal)
Additional Information: 2593/35942
Uncontrolled Keywords: Biocatalyst; bioelectrochemical cell; enzymatic zinc-air cell; hybrid biofuel cell; laccase; metal biofuel cell
Subjects: T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Science
Depositing User: Raihan Othman
Date Deposited: 05 Mar 2014 10:40
Last Modified: 20 Jun 2018 09:51
URI: http://irep.iium.edu.my/id/eprint/35942

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