Dynamic Modeling of Anode Function in Enzyme-Based Biofuel Cells Using High Mediator Concentration

Chan Der-Sheng, Dai Der-Jong and Ho-Shing Wu
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Chan Der-Sheng: Department of Chemical and Materials Engineering, Lee-Ming Institute of Technology, Tai-Sham 24305, Taiwan
Dai Der-Jong: Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung-Li 32003, Taiwan
Ho-Shing Wu: Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung-Li 32003, Taiwan

Energies, 2012, vol. 5, issue 7, 1-21

Abstract: The working principle of enzyme-based biofuel cells (EBFCs) is the same as that of conventional fuel cells. In an EBFC system, the electricity-production process is very intricate. Analysis requires a mathematical model that can adequately describe the EBFC and predict its performance. This paper develops a dynamic model simulating the discharge performance of the anode for which supported glucose oxidase and mediator immobilize in the EBFC. The dynamic transport behavior of substrate, redox state (ROS) of enzyme, enzyme-substrate complex, and the mediator creates different potential changes inside the anode. The potential-step method illustrates the dynamic phenomena of substrate diffusion, ROS of enzyme, production of enzyme-substrate complex, and reduction of the mediator with different potential changes.

Keywords: bioelectrocatalysis; dynamic model; enzyme-based biofuel cell (EBFC); immobilized; mediator (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2012
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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