SOFC stacks for mobile applications with excellent robustness towards thermal stresses

A. Hagen*, Anders Christian Wulff, P. Zielke, Xiufu Sun, B. Talic, Ilaria Ritucci, Henrik Lund Frandsen, S. H. Jensen, Wolff-Ragnar Kiebach, Peter Vang Hendriksen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Solid oxide fuel cells (SOFC) are attractive power units for mobile applications, like auxiliary power units or range extenders, due to high electrical efficiencies, avoidance of noble metals, fuel flexibility ranging from hydrogen to hydrogen carriers such as ammonia, methanol or e-gas, and tolerance towards CO and other fuel impurities. Among challenges hindering more wide-spread use are the robustness under thermal cycling. The current study employs short stacks containing anode or metal supported SOFCs, which were subjected to thermal cycles in a furnace and under more realistic conditions without external furnace. Heating from 100 °C to operating temperature was accomplished by sending hot air through the cathode compartment and heating from bottom (and top) of the stack, reaching a fastest ramping time of ca. 1 h. The stacks remained intact under severe temperature gradients of at least 20 °C/cm for anode supported and 30 °C/cm for metal supported SOFCs.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
Volume45
Issue number53
Pages (from-to)29201-29211
ISSN0360-3199
DOIs
Publication statusPublished - 2020

Keywords

  • Fast thermal cycling
  • Metal & anode supported SOFC
  • Mobile application
  • Robustness
  • SOFC stack
  • Thermal gradients

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