Numerical analysis of coupled transport and reaction phenomena in an anode-supported flat-tube solid oxide fuel cell

Masayuki Suzuki, Naoki Shikazono, Koji Fukagata, Nobuhide Kasagi

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

Heat and mass transfer with electrochemical reaction in an anode-supported flat-tube solid oxide fuel cell (FT-SOFC) is studied by means of three-dimensional numerical simulation. The distributions of the reaction fields in the anode-supported FT-SOFC are found to be similar to those in the planar SOFC with co-flow arrangement. However, in comparison with the latter, the concentration and activation overpotentials of the former can be reduced by additional reactant diffusion through the porous rib of the fuel channel. Parametric survey reveals that, for a fixed activation overpotential model, the output voltage can be improved by increasing the pore size of anode, while the cross-sectional geometry has smaller effect on the cell performance. Based on the results of three-dimensional simulation, we also develop a simplified numerical model of anode-supported FT-SOFC, which takes into account the concentration gradients in the thick anode of complex cross-sectional geometry. The simplified model can sufficiently predict the output voltage as well as the distributions of temperature and current density with very low computational cost. Thus, it can be used as a powerful tool for surveying wide range of anode-supported FT-SOFC design parameters.

Original languageEnglish
Pages (from-to)29-40
Number of pages12
JournalJournal of Power Sources
Volume180
Issue number1
DOIs
Publication statusPublished - 2008 May 15

Fingerprint

solid oxide fuel cells
Solid oxide fuel cells (SOFC)
numerical analysis
Numerical analysis
Anodes
anodes
tubes
Chemical activation
activation
Geometry
output
Surveying
Electric potential
electric potential
geometry
Pore size
mass transfer
Numerical models
Current density
Mass transfer

Keywords

  • Electrochemical reaction
  • Heat/mass transfer
  • Modeling
  • Simulation
  • Solid oxide fuel cell

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

Cite this

Numerical analysis of coupled transport and reaction phenomena in an anode-supported flat-tube solid oxide fuel cell. / Suzuki, Masayuki; Shikazono, Naoki; Fukagata, Koji; Kasagi, Nobuhide.

In: Journal of Power Sources, Vol. 180, No. 1, 15.05.2008, p. 29-40.

Research output: Contribution to journalArticle

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