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

Chan, Der-Sheng; Dai, Der‐Jong; Wu, Ho‐Shing

doi:10.3390/en5072524

Cited by 14 publications

(4 citation statements)

References 50 publications

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“…Another possibility is to consider the expression of the overpotential as the difference between potentials of electron and ion conducting phases. Such method was reported in the monograph [50], at the modeling of polymer electrolyte fuel cells [57][58][59], simulation with the software ANSYS FLUENT, and, finally, modeling of EFCs [21,25].…”

Section: Mathematical Modelingmentioning

confidence: 99%

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Glucose-Oxygen Biofuel Cell with Biotic and Abiotic Catalysts: Experimental Research and Mathematical Modeling

et al. 2020

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The demand for alternative sources of clean, sustainable, and renewable energy has been a focus of research around the world for the past few decades. Microbial/enzymatic biofuel cells are one of the popular technologies for generating electricity from organic substrates. Currently, one of the promising fuel options is based on glucose due to its multiple advantages: high energy intensity, environmental friendliness, low cost, etc. The effectiveness of biofuel cells is largely determined by the activity of biocatalytic systems applied to accelerate electrode reactions. For this work with aerobic granular sludge as a basis, a nitrogen-fixing community of microorganisms has been selected. The microorganisms were immobilized on a carbon material (graphite foam, carbon nanotubes). The bioanode was developed from a selected biological material. A membraneless biofuel cell glucose/oxygen, with abiotic metal catalysts and biocatalysts based on a microorganism community and enzymes, has been developed. Using methods of laboratory electrochemical studies and mathematical modeling, the physicochemical phenomena and processes occurring in the cell has been studied. The mathematical model includes equations for the kinetics of electrochemical reactions and the growth of microbiological population, the material balance of the components, and charge balance. The results of calculations of the distribution of component concentrations over the thickness of the active layer and over time are presented. The data obtained from the model calculations correspond to the experimental ones. Optimization for fuel concentration has been carried out.

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Section: Mathematical Modelingmentioning

confidence: 99%

“…As a rule, modeling and calculations are performed with commercial software packages (COMSOL Multiphysics, ANSYS FLUENT, CFD-ACE, FEM-LAB and so on.) [21][22][23][24] or using special software (i.e., MATLAB) [25,26].…”

Section: Introductionmentioning

confidence: 99%

Glucose-Oxygen Biofuel Cell with Biotic and Abiotic Catalysts: Experimental Research and Mathematical Modeling

et al. 2020

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“…In the PEMFC, the voltage loss mainly occurs in activation polarization, ohmic polarization and concentration polarization [26,27]. Figure 6 presents the polarization and power density curves of Radial-Ⅰ, Radial-Ⅱ, Radial-Ⅲ, parallel, single serpentine and 5-serpentine flow fields.…”

Section: Polarization Curvesmentioning

confidence: 99%

Radial Flow Field of Circular Bipolar Plate for Proton Exchange Membrane Fuel Cells

Zhu¹,

Zheng²

2019

IJHT

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The channel structure of flow field is an important influencing factor of the operation and performance of proton exchange membrane fuel cell (PEMFC). Based on circular bipolar plate, three radial flow fields, namely, Radial-I, Radial-II and Radial-III, with different structures were created, and compared to disclose the effects of radial channel on the flow field for the PEMFC. The results show that radial flow fields clearly outperformed traditional flow fields like parallel, single serpentine and multiple serpentine flow fields. Radial-II has the highest current density and power density than any other flow field. The channel and rib widths of radial flow field have greater impacts on PEMFC performance than channel depth. Radial flow field can effectively improve the water discharge and reduce the pressure drop of the PEMFC. The research findings shed new light on the performance improvement of the PEMFC.

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“…It was found that the rate-limiting step of electron diffusion could be defeated by an electrode with a thin redox polymer [16]. Chan et al developed a dynamic model simulating the discharge performance of an anode with supported glucose oxidase and mediator immobilization in the enzymatic biofuel cell [17]. Saranya et al established a mathematical model of an enzymatic biofuel cell without a membrane through direct electron transfer.…”

Section: Introductionmentioning

confidence: 99%

Glucose oxidase immobilized biofuel cell flow channel geometry analysis by CFDsimulations

Obut¹,

Bahar²

2019

Turk J Chem

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Glucose oxidase was covalently immobilized to a porous electrode, which was developed by using ferrocene functionalized polyethyleneimine, multiwall carbon nanotubes, and carbon cloth for biofuel cell applications in our recent studies. The kinetics parameters (i.e. k M , V max) and other parameters required for the modeling study were determined experimentally. Fuel cell flow channel geometry was analyzed by a computational fluid dynamics modeling approach.Substrate flow rate and mass transfer for each proposed channel type were considered in the simulations. The results showed that serpentine type flow channels are advantageous over pin type or parallel flow channels to acquire sufficient performance from the immobilized enzyme electrode at lower substrate flow rates. On the other hand, a disadvantage of using serpentine type channels was observed as higher pressure drops. However, such pressure drops were accepted as reasonable for the considered flow rates for suitable biofuel cell performance.

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

Cited by 14 publications

References 50 publications

Glucose-Oxygen Biofuel Cell with Biotic and Abiotic Catalysts: Experimental Research and Mathematical Modeling

Glucose-Oxygen Biofuel Cell with Biotic and Abiotic Catalysts: Experimental Research and Mathematical Modeling

Radial Flow Field of Circular Bipolar Plate for Proton Exchange Membrane Fuel Cells

Glucose oxidase immobilized biofuel cell flow channel geometry analysis by CFDsimulations

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