BaZr0.1Ce0.7Y0.1Yb0.1O3-δ as highly active and carbon tolerant anode for direct hydrocarbon solid oxide fuel cells

Meng Li, Bin Hua, San Ping Jiang, Jian Pu, Bo Chi, Li Jian

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

BaZr0.1Ce0.7Y0.1Yb0.1O3-δ (BZCYYb) perovskite is synthesized and examined as an alternative anode material for intermediate temperature solid oxide fuel cells (IT-SOFCs) based on direct hydrocarbon fuels, using polarization and electrochemical impedance spectroscopy techniques. Single-phased BZCYYb anode shows an excellent activity for both hydrogen and methane oxidation reactions, achieving a polarization resistance of 0.25 and 0.93 Ω cm2, and overpotential of 20 and 202 mV at 100 mA cm-2 and 750 °C in wet H2 (3% H2O/97% H2) and wet CH4 (3% H2O/97% CH4), respectively. The electrocatalytic activity of BZCYYb anodes is significantly higher than that of the (La,Sr)(Cr,Mn)O3 anodes as reported in the literature. Furthermore, BZCYYb exhibits excellent resistance to carbon deposition. The present study demonstrates that BZCYYb perovskite is a promising alternative anode material for direct hydrocarbon fuels based SOFCs.

Original languageEnglish
Pages (from-to)15975-15981
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume39
Issue number28
DOIs
StatePublished - Sep 23 2014
Externally publishedYes

Keywords

  • Alternative anode
  • BZCYYb
  • Carbon tolerance
  • Electrochemical performance
  • Methane
  • Solid oxide fuel cells

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