H 2S poisoning of solid oxide fuel cells

Kazunari Sasaki, K. Susuki, A. Iyoshi, M. Uchimura, N. Imamura, H. Kusaba, Y. Teraoka, H. Fuchino, K. Tsujimoto, Y. Uchida, N. Jingo

Research output: Contribution to journalArticle

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Abstract

The influence of H2 S fuel impurity on power generation characteristics of solid oxide fuel cells (SOFCs) has been analyzed by measuring cell voltage at a constant current density, as a function of H2 S concentration, operational temperature, and fuel gas composition. Reversible cell voltage change was observed around 1000°C, while fatal irreversible degradation occurred at a lower operational temperature, at a higher H2 S concentration, and at a lower fuel H2 CO ratio. Sulfur tolerance of SOFCs was improved by using Sc2 O3 -doped Zr O2 instead of Y2 O3 -doped Zr O2 as electrolyte and/or as electrolyte component in the anode cermets. It has been found that H2 S poisoning consists of at least two stages, i.e., an initial cell voltage drop within a short time period to a metastable cell voltage, followed by a gradual larger cell voltage drop. Possible H2 S poisoning processes are discussed.

Original languageEnglish
Article number009611JES
JournalJournal of the Electrochemical Society
Volume153
Issue number11
DOIs
Publication statusPublished - Oct 17 2006

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Solid oxide fuel cells (SOFC)
Electrolytes
Electric potential
Cermets
Gas fuels
Carbon Monoxide
Sulfur
Power generation
Anodes
Current density
Impurities
Degradation
Temperature
Chemical analysis
Voltage drop

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Cite this

Sasaki, K., Susuki, K., Iyoshi, A., Uchimura, M., Imamura, N., Kusaba, H., ... Jingo, N. (2006). H 2S poisoning of solid oxide fuel cells. Journal of the Electrochemical Society, 153(11), [009611JES]. https://doi.org/10.1149/1.2336075

H 2S poisoning of solid oxide fuel cells. / Sasaki, Kazunari; Susuki, K.; Iyoshi, A.; Uchimura, M.; Imamura, N.; Kusaba, H.; Teraoka, Y.; Fuchino, H.; Tsujimoto, K.; Uchida, Y.; Jingo, N.

In: Journal of the Electrochemical Society, Vol. 153, No. 11, 009611JES, 17.10.2006.

Research output: Contribution to journalArticle

Sasaki, K, Susuki, K, Iyoshi, A, Uchimura, M, Imamura, N, Kusaba, H, Teraoka, Y, Fuchino, H, Tsujimoto, K, Uchida, Y & Jingo, N 2006, 'H 2S poisoning of solid oxide fuel cells', Journal of the Electrochemical Society, vol. 153, no. 11, 009611JES. https://doi.org/10.1149/1.2336075
Sasaki K, Susuki K, Iyoshi A, Uchimura M, Imamura N, Kusaba H et al. H 2S poisoning of solid oxide fuel cells. Journal of the Electrochemical Society. 2006 Oct 17;153(11). 009611JES. https://doi.org/10.1149/1.2336075
Sasaki, Kazunari ; Susuki, K. ; Iyoshi, A. ; Uchimura, M. ; Imamura, N. ; Kusaba, H. ; Teraoka, Y. ; Fuchino, H. ; Tsujimoto, K. ; Uchida, Y. ; Jingo, N. / H 2S poisoning of solid oxide fuel cells. In: Journal of the Electrochemical Society. 2006 ; Vol. 153, No. 11.
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