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Development Of Long-term Stable Cathodes For Metal-supported Solid Oxide Fuel Cells

  • : Martin Bram1, David Udomsilp1, Alexander Beez1, Daniel Roehrens1, Marco Brandner2, Norbert H. Menzler1
  • : 1Forschungszentrum Jülich, 2Plansee SE
  • : PDF Download
  • : 2016

Abstract

Metal supported fuel cells (MSCs) offer the possibility to extend the field of Solid Oxide Fuel Cell (SOFC) applications to the non-stationary sector, e.g. the generation of electricity in auxiliary power units (APUs) for heavy-duty trucks. However, the application of metal supports and metal interconnects both made of highly Cr-alloyed steels as well as the use of Diesel reformate as a fuel implies major challenges for the MSC processing and long-term operation. The present work covers two important aspects regarding these issues. A detailed experimental study was conducted to optimize the processing of the cathode aiming on improved cathode adherence and activation. Control of the oxygen partial pressure during sintering is required to avoid deterioration of the metal support due to strong oxidation. On the other hand, the mechanisms of Cr-related cathode degradation during MSC operation were investigated by model experiments in the presence of the interconnect steel.

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