Mathematical analysis of planar solid oxide fuel cells

Anchasa Pramuanjaroenkij, Sadik Kakaç, Xiang Yang Zhou

Research output: Contribution to journalArticle

85 Scopus citations

Abstract

In this work, a mathematical transport model for a planar solid oxide fuel cell has been developed and the analysis has been performed by the use of an in-house program which can help developers to understand the effects of various parameters on the performance of the fuel cell. In the model, electrochemical kinetics, gas dynamics and transport of energy and species are coupled. The model predicts polarization curve, velocity and temperature fields, species concentration and current distribution in the cell depending on fuel cell temperatures and electrolyte materials used in the components, such as yttria-stabilized zirconia (YSZ) and gadolinia-doped ceria (CGO). SOFC operating temperatures at 500, 600, 800, and 1000 {ring operator} C are considered and the modified Nernst equation is used to obtain a reversible cell voltage. It is shown that the anode-supported solid oxide fuel cells with YSZ electrolyte can be used to obtain a high power density in the higher current density range than the YSZ electrolyte-supported solid oxide fuel cells when they are operated at 800 {ring operator} C. Performance comparisons between two electrolyte materials, YSZ and CGO are made. The YSZ-electrolyte solid oxide fuel cell in this work shows higher power density than the CGO-electrolyte solid oxide fuel cell at the higher temperatures than 750 {ring operator} C.

Original languageEnglish (US)
Pages (from-to)2547-2565
Number of pages19
JournalInternational Journal of Hydrogen Energy
Volume33
Issue number10
DOIs
StatePublished - May 1 2008

Keywords

  • Fuel cell modeling
  • Fuel cells
  • Solid oxide fuel cells (SOFCs)

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Renewable Energy, Sustainability and the Environment

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