Physical Modeling of the Enzymatic Glucose-Fuelled Fuel Cells - Advances in Chemical Engineering and Science

ACES > Vol.3 No.4, October 2013

Advances in Chemical Engineering and Science

Volume 3, Issue 4 (October 2013)

ISSN Print: 2160-0392 ISSN Online: 2160-0406

Google-based Impact Factor: 1.41 Citations h5-index & Ranking

Physical Modeling of the Enzymatic Glucose-Fuelled Fuel Cells ()

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Download as PDF (Size: 469KB) PP. 218-226

DOI: 10.4236/aces.2013.34028 4,506 Downloads 6,755 Views Citations

Author(s)

Vladimir Zeev Rubin, Lea Mor

Affiliation(s)

Department of Biotechnology Engineering, Ort Braude College, Karmiel, Israel.
SciRCon (Scientific, Research, Consulting), Los Angeles, USA.

ABSTRACT

An enzymatic glucose biofuel cell uses glucose as fuel and enzymes as biocatalyst, to transform biochemical energy into electrical energy. An analytical modelling of an enzymatic biofuel cell should be used, while developing fuel cell, to estimate its various enzymatic parameters, to obtain the highest voltage feasibly. The analytical model was developed, and the open circuit voltage (OCV) calculated by the model for various parameters of the fuel cell is in agreement with the experimental results. The OCV is interpreted by using this model, based on theoretical consideration of ions transportation in the solution. The generation and consumptions of the ions near the electrodes were defined in the model by exponential approximations, with different depletion coefficients. The model reveals that increasing the rates of hydrogen ions generation and (or) consumption by enzyme or chemical reactions leads to a higher value of OCV. The model points that the OCV is saturated with a glucose concentration and increased logarithmically with a surface enzyme concentration. Hence, a low glucose concentration is sufficient to obtain adequate OCV, on the one hand, but it can be increased by increasing electrode surface porosity, on the other hand. This model can be expanded to include time and close circuit voltage.

KEYWORDS

Enzyme; Biofuel Cell; Glucose; Modeling; Open Circle Voltage; Surface Generation

Share and Cite:

V. Rubin and L. Mor, "Physical Modeling of the Enzymatic Glucose-Fuelled Fuel Cells," Advances in Chemical Engineering and Science, Vol. 3 No. 4, 2013, pp. 218-226. doi: 10.4236/aces.2013.34028.

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[5]	Bioelectrocatalytic Oxygen Reduction by Laccase Immobilized on Various Carbon Carriers
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[6]	A new mathematical modelling using Homotopyperturbation method to solve nonlinear equations in enzymatic glucose fuel cells
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