A 1-D computational model is presented in which performance of a solid oxide fuel cell with functionally graded electrodes can be predicted. The model calculates operational cell voltages with varying geometric and operational parameters. The model accounts for losses from mass transport through the porous electrodes, ohmic losses from current flow through the electrodes and electrolyte, and activation polarization. It also includes a model for the full or partial internal reforming of methane. The model was applied to investigate the effect of electrode porosity distribution on performance. Specifically the physical phenomena that occur when the electrode is designed with a change in microstructure along its thickness is studied. The general trends that occur are investigated to find the arrangement for which the minimal polarization occurs. Both diluted hydrogen fuel and partially reformed methane streams are investigated. It is concluded that performance benefits are seen when the electrodes are given an increase in porosity near the electrolyte interface.
Skip Nav Destination
ASME 2005 International Mechanical Engineering Congress and Exposition
November 5–11, 2005
Orlando, Florida, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
0-7918-4222-3
PROCEEDINGS PAPER
Mass Transfer in Functionally Graded Solid Oxide Fuel Cell Electrodes Available to Purchase
Wilson K. S. Chiu
Wilson K. S. Chiu
University of Connecticut
Search for other works by this author on:
Eric S. Greene
University of Connecticut
Wilson K. S. Chiu
University of Connecticut
Paper No:
IMECE2005-82531, pp. 1009-1013; 5 pages
Published Online:
February 5, 2008
Citation
Greene, ES, & Chiu, WKS. "Mass Transfer in Functionally Graded Solid Oxide Fuel Cell Electrodes." Proceedings of the ASME 2005 International Mechanical Engineering Congress and Exposition. Heat Transfer, Part B. Orlando, Florida, USA. November 5–11, 2005. pp. 1009-1013. ASME. https://doi.org/10.1115/IMECE2005-82531
Download citation file:
7
Views
Related Proceedings Papers
Numerical Simulation of Multi Species Mass Transfer in a SOFC Electrodes Layer Using Lattice Boltzmann Method
FUELCELL2012
Effect of Bi-Layer Interconnector Design on the Current Density of Solid Oxide Fuel Cells
FUELCELL2009
Related Articles
Stability Issues of Fuel Cell Models in the Activation and Concentration Regimes
J. Electrochem. En. Conv. Stor (November,2018)
Numerical Simulation of Multispecies Mass Transfer in a SOFC Electrodes Layer Using Lattice Boltzmann Method
J. Fuel Cell Sci. Technol (December,2012)
Influence of the Temperature on Oxygen Reduction on SOFC Composite Electrodes: Theoretical and Experimental Analysis
J. Fuel Cell Sci. Technol (February,2008)
Related Chapters
Numerical Study on a Novel SOFC with Bi-Layer Interconnector
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)
An Easy-to-Approach Comprehensive Model and Computation for SOFC Performance and Design Optimization
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)
Laminar Fluid Flow and Heat Transfer
Applications of Mathematical Heat Transfer and Fluid Flow Models in Engineering and Medicine