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SOFC stacks for mobile applications with excellent robustness towards thermal stresses

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.

Category

Academic article

Language

English

Author(s)

  • Anke Hagen
  • Anders Christian Wulff
  • Philipp Zielke
  • Xiufu Sun
  • Belma Talic
  • Ilaria Ritucci
  • Henrik Lund Frandsen
  • Søren Højgaard Jensen
  • Wolff Ragnar Kiebach
  • Peter Vang Hendriksen

Affiliation

  • SINTEF Industry / Sustainable Energy Technology
  • Denmark
  • Aalborg University
  • Technical University of Denmark

Year

2020

Published in

International Journal of Hydrogen Energy

ISSN

0360-3199

Volume

45

Issue

53

Page(s)

29201 - 29211

View this publication at Norwegian Research Information Repository