Modeling and simulation of planar SOFC to study the electrochemical properties

Hussain, Jawad; Ali, Rashid; Akhtar, Majid Niaz; Jaffery, Mujtaba Hussain; Shakir, Imran; Raza, Rizwan

doi:10.1016/j.cap.2020.02.018

Cited by 32 publications

(17 citation statements)

References 18 publications

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“…The electrochemical reactions at the electrodes, and their kinetics responsible for activation over-potential are described by Butler-Volmer equation. [17,18]…”

Section: Secondary Current Distributionmentioning

confidence: 99%

“…When the overpotential is high as for the cathode, Butler-Volmer equation can be simplified to the Tafel equation [17,18]…”

Section: Secondary Current Distributionmentioning

confidence: 99%

“…The concentrations of hydrogen and oxygen at the electrode-membrane interface can be determined from Henry's law equation of the forms expressed in the following two equations [17,18]:…”

Section: Secondary Current Distributionmentioning

confidence: 99%

“…In porous media of the catalyst and diffusion layers, the Navier-Stokes equation is changed into the Brinkman equations and chemical species transport in ideal gas mixtures is described by the Maxwell-Stefan equation [17,18] Brinkman equations (cathode) (…”

Section: Brinkman Equations (Anode)mentioning

confidence: 99%

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A 3-dimensional mathematical model to study effects of geometrical parameters on performance of solid oxide fuel cell

Jha

Surasani

Krishnamurthy

2021

J. Electrochem. Sci. Eng.

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A 3D mathematical model is developed to study effects of various geometrical parameters such as cathode to anode thickness ratio, rib width, and channel width under various flow conditions, on the performance of solid oxide fuel cell (SOFC). These parameters represent the cathode supported configuration of the solid oxide fuel cell. It is observed from simulation results that performance of SOFC fuel cell is increased at higher cathode to anode thickness. Simulation results also showed that for different volumetric flow rates, the current density and fuel cell performance decrease as rib width increases, what is due to higher contact resistance. It is also shown that by increasing the channel width, the fuel cell performance was increased due to increase in the reaction surface area. Simulation results are compared and validated with literature experimental data, showing well agreement.

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“…The electrochemical reactions at the electrodes, and their kinetics responsible for activation over-potential are described by Butler-Volmer equation. [17,18]…”

Section: Secondary Current Distributionmentioning

confidence: 99%

“…When the overpotential is high as for the cathode, Butler-Volmer equation can be simplified to the Tafel equation [17,18]…”

Section: Secondary Current Distributionmentioning

confidence: 99%

“…The concentrations of hydrogen and oxygen at the electrode-membrane interface can be determined from Henry's law equation of the forms expressed in the following two equations [17,18]:…”

Section: Secondary Current Distributionmentioning

confidence: 99%

Section: Brinkman Equations (Anode)mentioning

confidence: 99%

See 2 more Smart Citations

A 3-dimensional mathematical model to study effects of geometrical parameters on performance of solid oxide fuel cell

Jha

Surasani

Krishnamurthy

2021

J. Electrochem. Sci. Eng.

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“…Planar and tubular are the different geometries of solid oxide fuel cells [23][24][25][26]. The air and hydrogen flow though the unit of flat stacks via channels built in to the anode and cathode in the planar design.…”

Section: Classificationmentioning

confidence: 99%

Fuel Cells: Alternative Energy Sources for Stationary, Mobile and Automotive Applications

Petreanu¹,

Dragan²,

Badea³

2020

Thermodynamics and Energy Engineering

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This paper presents a classification and also an overview of fuel cells, including the working principles, the equations of the governing reactions, and the main applications. A brief exposure of thermodynamics and electrochemical theory describe the functioning of the fuel cells. Further, the proton exchange membrane fuel cells assembly, starting with the schematic presentation of the main components, the role of each component in fuel cell, the specific materials and their requested properties, and the way of assembling the components into device will be detailed. In conclusion, the challenges related to reliability and the cost and the targets for future development of the proton exchange membrane fuel cells for mobile and stationary applications will be presented.

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Presentation and Performance of a Planar Solid Oxide Fuel Cell with Chaotic Gas Channels

Wang,

An,

et al. 2023

Energy Tech

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Flow condition in gas channels determines the distribution and diffusion of reactants, governing electrochemical reactions in the solid oxide fuel cell (SOFC). It is found that the magnitude and direction of fluid velocity change with the geometric position in the channel, which leads to larger secondary flow velocity components and enhances mass transfer between fluids. Laser Doppler velocimetry experiment is conducted to verify the accuracy of numerical results of fluid flow in chaotic flow channels. Herein, a 3D numerical model with coupled multiphysics fields is built to evaluate fluid flow in channels and SOFC performance. The distribution characteristics of reactants in chaotic flow channel and the characteristics of temperature distribution, current density and power density in SOFCs caused by structures of straight and chaotic flow channels are analyzed and discussed. Compared with conventional straight flow channel SOFCs, the average current density of SOFC with chaotic flow channel is improved and the power density is increased by 9.7%. The reactant homogeneity in the electrode is also improved, which reduces the concentration polarization loss of SOFC.

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Modeling and simulation of planar SOFC to study the electrochemical properties

Cited by 32 publications

References 18 publications

A 3-dimensional mathematical model to study effects of geometrical parameters on performance of solid oxide fuel cell

A 3-dimensional mathematical model to study effects of geometrical parameters on performance of solid oxide fuel cell

Fuel Cells: Alternative Energy Sources for Stationary, Mobile and Automotive Applications

Presentation and Performance of a Planar Solid Oxide Fuel Cell with Chaotic Gas Channels

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