An efficient ceramic-based anode for solid oxide fuel cells

John Thomas Sirr Irvine, Q Fu, F Tietz, D Sebold, S Tao

Research output: Contribution to journalArticlepeer-review

76 Citations (Scopus)

Abstract

A new ceramic-based multi-component material, containing one electronic conductor (Y-substituted SrTiO3, SYT), one ionic conductor (YSZ) and a small amount (similar to 5 vol.%) of Ni catalyst, was investigated as an alternative anode material for solid oxide fuel cells (SOFCs). The ceramic framework SYT/YSZ shows good dimensional stability upon redox cycling and has an electrical conductivity of similar to 10 S cm(-1) under typical anode conditions. Owing to the substantial electrocatalytic activity of the fine and well-dispersed Ni particles on the surface of the ceramic framework, the electrode polarization resistance of 5 vol.% Ni-impregnated SYT/YSZ anode reached 0.21 Omega cm(2) at 800 degrees C in wet Ar/5%H-2. Based on these results, a redox-stable anode-supported planar SOFC is expected using this anode material, thus offering great advantages over the current generation of Ni/YSZ-based SOFCs. (C) 2007 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)663-669
Number of pages7
JournalJournal of Power Sources
Volume171
DOIs
Publication statusPublished - 27 Sept 2007

Keywords

  • ceramic
  • electrochemical property
  • anode material
  • redox
  • solid oxide fuel cells
  • DOPED STRONTIUM-TITANATE
  • STABILIZED ZIRCONIA
  • ELECTRICAL-PROPERTIES
  • SOFC ANODES
  • OXIDATION
  • PERFORMANCE
  • CONVERSION
  • REDUCTION
  • IMPEDANCE
  • HYDROGEN

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