High electric conversion efficiency and electrochemical properties of anode-supported SOFCs

Yoshio Matsuzaki, Yoshitaka Baba, Teruhiro Sakurai

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

The electric efficiency and electrochemical properties of anode-supported single cells with humidified methane as a fuel have been investigated using the single cells and anode half-cells. The performance of the single cell which had a relatively low porosity of approximately 37% in the anode substrate with humidified CH4 fuel was found to be lower than that with humidified H2 fuel. In contrast to this result, the performance of the single cell having a relatively high porosity in the anode substrate with humidified CH4 fuel was found to be almost equal to that with humidified H 2 fuel. It could be concluded that the difference in the performance of the single cell having relatively low porosity in the anode substrate with humidified CH4 fuel and humidified H2 fuel was caused by the diffusion resistance of CO or CO2 in the substrate. The single cell having relatively high porosity in the anode substrate can be operated at high fuel utilization giving a methane-to-electricity conversion efficiency of as high as 53.6% (HHV).

Original languageEnglish
Pages (from-to)81-86
Number of pages6
JournalSolid State Ionics
Volume174
Issue number1-4
DOIs
Publication statusPublished - Oct 29 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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