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Modeling and Simulation of Enzymatic Biofuel Cells with Three-Dimensional Microelectrodes

Department of Mechanical and Materials Science Engineering, Florida International University, 10555 W. Flagler Street, Miami, FL 33174, USA
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Energies 2014, 7(7), 4694-4709; https://doi.org/10.3390/en7074694
Received: 19 March 2014 / Revised: 2 July 2014 / Accepted: 4 July 2014 / Published: 22 July 2014
The enzymatic biofuel cells (EBFCs) are considered as an attractive candidate for powering future implantable medical devices. In this study, a computational model of EBFCs based on three-dimensional (3-D) interdigitated microelectrode arrays was conducted. The main focus of this research is to investigate the effect of different designs and spatial distributions of the microelectrode arrays on mass transport of fuels, enzymatic reaction rate, open circuit output potential and current density. To optimize the performance of the EBFCs, numerical simulations have been performed for cylindrical electrodes with various electrode heights and well widths. Optimized cell performance was obtained when the well width is half of the height of the 3-D electrode. In addition, semi-elliptical shaped electrode is preferred based on the results from current density and resistive heating simulation. View Full-Text
Keywords: finite element analysis; enzymatic biofuel cell; Michaelis-Menten enzyme kinetics; mass transport; current density distribution; steady state response finite element analysis; enzymatic biofuel cell; Michaelis-Menten enzyme kinetics; mass transport; current density distribution; steady state response
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Song, Y.; Penmatsa, V.; Wang, C. Modeling and Simulation of Enzymatic Biofuel Cells with Three-Dimensional Microelectrodes. Energies 2014, 7, 4694-4709.

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