Sr0.92Y0.08TiO3-δ/Sm 0.2Ce0.8O2-δ anode for solid oxide fuel cells running on methane

Hee Su Kim, Sung Pil Yoon, Jeong Woo Yun, Shin Ae Song, Seong Cheol Jang, Suk Woo Nam, Yong Gun Shul

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Yttria-doped strontium titanium oxide (Sr0.92Y 0.08TiO3-δ; SYT) was investigated as an alternative anode material for solid oxide fuel cells (SOFCs). The SYT synthesized by the Pechini method exhibits excellent phase stability during the cell fabrication processes and SOFC operation and good electrical conductivity (about 0.85 S/cm, porosity 30%) in reducing atmosphere. The performance of SYT anode is characterized by slow electrochemical reactions except for the gas-phase diffusion reactions. The cell performance with the SYT anode running on methane fuel was improved about 5 times by SDC film coating, which increased the number of reaction sites and also accelerated electrochemical reaction kinetics of the anode. In addition, the SDC-coated SYT anode cell was stably operated for 900 h with methane. These results show that the SDC-coated SYT anode can be a promising anode material for high temperature SOFCs running directly on hydrocarbon fuels.

Original languageEnglish
Pages (from-to)16130-16139
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number21
DOIs
Publication statusPublished - 2012 Nov 1

All Science Journal Classification (ASJC) codes

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

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