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RESEARCH PAPER

Application of an Anode Model to Investigate Physical Parameters in an Internal Reforming Solid-Oxide Fuel Cell

[+] Author and Article Information
Eric S. Greene

Department of Mechanical Engineering, University of Connecticut, Storrs, CT 06269-3139

Maria G. Medeiros

 Naval Undersea Warfare Center - Division Newport, Newport, RI 02841

Wilson K. Chiu1

Department of Mechanical Engineering,  University of Connecticut, Storrs, CT 06269-3139

1

Corresponding author.

J. Fuel Cell Sci. Technol 2(2), 136-140 (Jan 27, 2005) (5 pages) doi:10.1115/1.1895925 History: Received September 03, 2004; Revised January 27, 2005

A one-dimensional model of chemical and mass transport phenomena in the porous anode of a solid-oxide fuel cell, in which there is internal reforming of methane, is presented. Macroscopically averaged porous electrode theory is used to model the mass transfer that occurs in the anode. Linear kinetics at a constant temperature are used to model the reforming and shift reactions. Correlations based on the Damkohler number are created to relate anode structural parameters and thickness to a nondimensional electrochemical conversion rate and cell voltage. It is shown how these can be applied in order to assist the design of an anode.

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Copyright © 2005 by American Society of Mechanical Engineers
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Figures

Grahic Jump Location
Figure 3

Comparison of molar formation rates across the anode between (4) and model calculations

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Figure 4

Change of Damkohler number with variation of anode thickness and Ψ

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Figure 2

Comparison of methane concentration in a SOFC anode between (4) and model calculations

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Figure 1

Arrangement of the SOFC anode 1-D model

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