Solid oxide fuel cells operated by internal partial oxidation reforming of iso-octane

Zhongliang Zhan, Scott A Barnett*

*Corresponding author for this work

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

Two types of solid oxide fuel cells (SOFCs), with thin Ce0.85Sm0.15O1.925 (SDC) or 8 mol% Y2O3-stabilized ZrO2 (YSZ) electrolytes, were fabricated and tested with iso-octane/air fuel mixtures. An additional Ru-CeO2 catalyst layer, placed between the fuel stream and the anode, was needed to obtain a stable output power density without anode coking. Thermodynamic analysis and catalysis experiments showed that H2 and CO were primary reaction products at ≈750 °C, but that these decreased and H2O and CO2 increased as the operating temperature dropped below ≈600 °C. Power densities for YSZ cells were 0.7 W cm-2 at 0.7 V and 790 °C, and for SDC cells were 0.6 W cm-2 at 0.6 V and 590 °C. Limiting current behavior was observed due to the relatively low (≈20%) H2 content in the reformed fuel.

Original languageEnglish (US)
Pages (from-to)353-357
Number of pages5
JournalJournal of Power Sources
Volume155
Issue number2
DOIs
StatePublished - Apr 21 2006

Keywords

  • Catalyst
  • Hydrocarbons
  • Iso-octane
  • Partial oxidation
  • Solid oxide fuel cells

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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