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Detailed mathematical model of an enzymatic fuel cell

Detailed mathematical model of an enzymatic fuel cell
Detailed mathematical model of an enzymatic fuel cell
In this paper, two-dimensional steady-state and dynamic models for an enzymatic fuel cell are developed. The anode consists of a biocatalyst (an enzyme cascade of glucose dehydrogenase and diaphorase with VK3 mediator) immobilized in a porous electrically-conducting anode, while glucose and the phosphate buffer are supplied from a solution. An air-breathing bilirubin oxidase/ferricyanide cathode and a cellophane membrane complete the cell unit. Detailed mass and charge balances are combined with a model for the reaction mechanism in the electrodes. The model is validated against experimental polarization data, demonstrating good agreement, and the dynamic performance is discussed. The VK3 equilibrium potential is varied and its effect on the enzymatic system and power output is examined.
0013-4651
Osman, Mohamad Hussein
fb704b70-ea39-46d6-8d7d-7c7f92f25486
Shah, A.A.
5c43ac37-c4a7-4256-88ef-8c427886b924
Wills, Richard
60b7c98f-eced-4b11-aad9-fd2484e26c2c
Osman, Mohamad Hussein
fb704b70-ea39-46d6-8d7d-7c7f92f25486
Shah, A.A.
5c43ac37-c4a7-4256-88ef-8c427886b924
Wills, Richard
60b7c98f-eced-4b11-aad9-fd2484e26c2c

Osman, Mohamad Hussein, Shah, A.A. and Wills, Richard (2013) Detailed mathematical model of an enzymatic fuel cell. Journal of the Electrochemical Society, 160 (8). (doi:10.1149/1.059308jes).

Record type: Article

Abstract

In this paper, two-dimensional steady-state and dynamic models for an enzymatic fuel cell are developed. The anode consists of a biocatalyst (an enzyme cascade of glucose dehydrogenase and diaphorase with VK3 mediator) immobilized in a porous electrically-conducting anode, while glucose and the phosphate buffer are supplied from a solution. An air-breathing bilirubin oxidase/ferricyanide cathode and a cellophane membrane complete the cell unit. Detailed mass and charge balances are combined with a model for the reaction mechanism in the electrodes. The model is validated against experimental polarization data, demonstrating good agreement, and the dynamic performance is discussed. The VK3 equilibrium potential is varied and its effect on the enzymatic system and power output is examined.

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Published date: 16 May 2013

Identifiers

Local EPrints ID: 414124
URI: http://eprints.soton.ac.uk/id/eprint/414124
ISSN: 0013-4651
PURE UUID: be313ef5-dab8-4fec-aa20-0802cd8df186
ORCID for Richard Wills: ORCID iD orcid.org/0000-0002-4805-7589

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Date deposited: 15 Sep 2017 16:30
Last modified: 18 Feb 2021 17:01

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