Performance variation with SDC buffer layer thickness

Ryan J. Milcarek, Kang Wang, Ryan L. Falkenstein-Smith, Jeongmin Ahn

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

The performance of anode-supported solid oxide fuel cells was investigated as the SDC buffer layer thickness was varied between ∼0.4 μm and ∼2.3 μm. The thickness of the buffer layer has a significant effect with the peak performance varying in magnitude by a factor of almost three. A peak power density of 1106 mW cm-2 was achieved at 800°C and an optimal SDC buffer layer thickness of ∼1.5 μm. The performance variation was complex due to a balance between ohmic and polarization losses, triple phase boundary area, pin holes and interfacial reactions between the BSCF + SDC cathode, SDC buffer layer, and YSZ electrolyte. Understanding this variation is essential in order to compare two fuel cells having a different porous buffer layer thickness.

Original languageEnglish (US)
Pages (from-to)9500-9506
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume41
Issue number22
DOIs
StatePublished - Jun 15 2016

Keywords

  • Anode-supported solid oxide fuel cell
  • Buffer layer
  • Interlayer
  • Intermediate temperature solid oxide fuel cell

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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