Performance analysis of a SOFC button cell using a CFD model

Barzi, Y. Mollayi; Raoufi, Arman; Lari, Hamid Reza

doi:10.1016/j.ijhydene.2010.05.086

Cited by 25 publications

(17 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To verify the validity of the model, a button cell with the same parameters and settings from [39] is built and tested. All relevant parameters, including those from the reference and those fitted, are listed in Table. 3.…”

Section: Model Parameters and Model Validationmentioning

confidence: 99%

Effects of changes in solid oxide fuel cell electrode thickness on ohmic and concentration polarizations

Zhang

Gao

et al. 2016

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

In order to address the shortcomings of the solid oxide fuel cell (SOFC) associated with the thin electrode, the anode-cathode-supported SOFC (ACSC) is proposed in this study. In the ACSC, the electrolyte is thin, while both the anode and cathode have enough thickness to act as self-supporting layers. The mathematical models of both the anode-supported SOFC (ASC) and ACSC are established, which capture the intricate interdependency among the charge and gas transport, and the electrochemical reactions. The validity of the mathematical model is preliminarily verified by the good agreement between the numerical and experimental I-V curves of the ASC button cell. For the same base case parameters and operating conditions, the average current density of ASC is 6388 A m-2 , only 83% of the ACSC, 7713 A m-2. The advantages of ACSC mainly stem from two aspects: i) the increased oxygen concentration under the solid rib covered zone, which extends the reaction active zone; ii) the increased cross section of the electric current transport path, which greatly decreases the cathode ohmic polarization. The performance comparison between the ACSC and ASC are examined by systematically varying the cathode electric conductivity, porosity, tortuosity factor and the output voltage. The results indicated that the advantage of ACSC over ASC is always obvious although the performance of ACSC varies with different parameters.

show abstract

Section: Model Parameters and Model Validationmentioning

confidence: 99%

Effects of changes in solid oxide fuel cell electrode thickness on ohmic and concentration polarizations

Zhang

Gao

et al. 2016

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

show abstract

“…A button cell is a well‐known form of a solid‐oxide fuel cell (SOFC) operating at high temperature (1000 K) with hydrogen (or methane) as a fuel and oxygen as an oxidant 23–25. An important feature of a single button cell is that the reactant flow is transverse to the catalyst surface.…”

Section: Intensification Techniquesmentioning

confidence: 99%

“…The flow hydrodynamics in the channel are different from the jet flow in the button cell. Due to the high mass transfer rates, the button cell is used for testing electrochemical reactions, fuel cell components, and materials 23–26. There is also a wall jet electrochemical reactor27 for testing the electrochemical reactions in the liquid phase.…”

Section: Intensification Techniquesmentioning

confidence: 99%

A New Concept for High‐Performance Fuel Cell Design with Controlled Component Mixing using Jet Flow

Данилов

Denayer

2014

Energy Tech

View full text Add to dashboard Cite

A new concept is proposed for a high‐performance fuel cell design. The concept is based on the intensification of mass transfer processes due to implementing multiple contact zones with jet flow and preventing the intermixing of the reactants and products. A proof of concept was performed by comparing the new fuel cell design with conventional proton‐exchange membrane fuel cell (PEMFC) containing a standard membrane electrode assembly (MEA) and gas diffusion layer (GDL). It is shown that the application of the new concept for flow‐field design provides an increase of the fuel cell performance of up to 40 % without humidification and flooding problems.

show abstract

“…High-temperature operation offers different advantages, such as high reaction rates (electrochemically), tolerance of material impurities and the possibility of using various fuels [14]. Many studies investigate the performance of fuel cells with a small active area (<16 cm 2 ) and especially button cells [15]. Only few studies exist in which the performance of industrial-sized fuel cells was investigated.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional numerical and experimental investigation of an industrial-sized SOFC fueled by diesel reformat – Part I: Creation of a base model for further carbon deposition modeling

Schluckner

Subotić

Lawlor

et al. 2014

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

Performance analysis of a SOFC button cell using a CFD model

Cited by 25 publications

References 14 publications

Effects of changes in solid oxide fuel cell electrode thickness on ohmic and concentration polarizations

Effects of changes in solid oxide fuel cell electrode thickness on ohmic and concentration polarizations

A New Concept for High‐Performance Fuel Cell Design with Controlled Component Mixing using Jet Flow

Three-dimensional numerical and experimental investigation of an industrial-sized SOFC fueled by diesel reformat – Part I: Creation of a base model for further carbon deposition modeling

Contact Info

Product

Resources

About