Sulfur tolerance of solid oxide fuel cells

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

Sulfur tolerance of solid oxide fuel cells

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

Hydrogen Utilization Engineering

Research output: Contribution to conference › Paper › peer-review

21 Citations (Scopus)

Abstract

Influence of H₂S fuel impurity on power generation characteristics of SOFCs has been analyzed by measuring cell voltage at a given current density, as a function of operational temperature, H₂S concentration, and fuel gas composition. Reversible cell voltage drop was observed around 1000°C, but fatal irreversible degradation occurred at lower operational temperatures, at higher H₂S concentrations, and at lower fuel H₂/CO ratios. Sulfur tolerance of SOFCs improved by using Sc₂O₃-doped ZrO₂ instead of Y₂O ₃-doped ZrO₂ as electrolyte and/or as electrolyte component in the anode cermet. It has been found that H₂S poisoning consists of at least two stages, i.e. an initial cell voltage drop within a few minutes to a metastable cell voltage, followed by a gradual larger cell voltage drop associated with the agglomeration of Ni particles.

Original language	English
Pages	1267-1274
Number of pages	8
Publication status	Published - 2005
Event	9th International Symposium on Solid Oxide Fuel Cells, SOFC IX - Quebec, Canada Duration: May 15 2005 → May 20 2005

Other

Other	9th International Symposium on Solid Oxide Fuel Cells, SOFC IX
Country/Territory	Canada
City	Quebec
Period	5/15/05 → 5/20/05

All Science Journal Classification (ASJC) codes

Engineering(all)

Cite this

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title = "Sulfur tolerance of solid oxide fuel cells",

abstract = "Influence of H2S fuel impurity on power generation characteristics of SOFCs has been analyzed by measuring cell voltage at a given current density, as a function of operational temperature, H2S concentration, and fuel gas composition. Reversible cell voltage drop was observed around 1000°C, but fatal irreversible degradation occurred at lower operational temperatures, at higher H2S concentrations, and at lower fuel H2/CO ratios. Sulfur tolerance of SOFCs improved by using Sc2O3-doped ZrO2 instead of Y2O 3-doped ZrO2 as electrolyte and/or as electrolyte component in the anode cermet. It has been found that H2S poisoning consists of at least two stages, i.e. an initial cell voltage drop within a few minutes to a metastable cell voltage, followed by a gradual larger cell voltage drop associated with the agglomeration of Ni particles.",

author = "K. Sasaki and K. Susuki and A. Iyoshi and M. Uchimura and N. Imamura and H. Kusaba and Y. Teraoka and H. Fuchino and K. Tsujimoto and Y. Uchida and N. Jingo",

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language = "English",

pages = "1267--1274",

note = "9th International Symposium on Solid Oxide Fuel Cells, SOFC IX ; Conference date: 15-05-2005 Through 20-05-2005",

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TY - CONF

T1 - Sulfur tolerance of solid oxide fuel cells

AU - Sasaki, K.

AU - Susuki, K.

AU - Iyoshi, A.

AU - Uchimura, M.

AU - Imamura, N.

AU - Kusaba, H.

AU - Teraoka, Y.

AU - Fuchino, H.

AU - Tsujimoto, K.

AU - Uchida, Y.

AU - Jingo, N.

PY - 2005

Y1 - 2005

N2 - Influence of H2S fuel impurity on power generation characteristics of SOFCs has been analyzed by measuring cell voltage at a given current density, as a function of operational temperature, H2S concentration, and fuel gas composition. Reversible cell voltage drop was observed around 1000°C, but fatal irreversible degradation occurred at lower operational temperatures, at higher H2S concentrations, and at lower fuel H2/CO ratios. Sulfur tolerance of SOFCs improved by using Sc2O3-doped ZrO2 instead of Y2O 3-doped ZrO2 as electrolyte and/or as electrolyte component in the anode cermet. It has been found that H2S poisoning consists of at least two stages, i.e. an initial cell voltage drop within a few minutes to a metastable cell voltage, followed by a gradual larger cell voltage drop associated with the agglomeration of Ni particles.

AB - Influence of H2S fuel impurity on power generation characteristics of SOFCs has been analyzed by measuring cell voltage at a given current density, as a function of operational temperature, H2S concentration, and fuel gas composition. Reversible cell voltage drop was observed around 1000°C, but fatal irreversible degradation occurred at lower operational temperatures, at higher H2S concentrations, and at lower fuel H2/CO ratios. Sulfur tolerance of SOFCs improved by using Sc2O3-doped ZrO2 instead of Y2O 3-doped ZrO2 as electrolyte and/or as electrolyte component in the anode cermet. It has been found that H2S poisoning consists of at least two stages, i.e. an initial cell voltage drop within a few minutes to a metastable cell voltage, followed by a gradual larger cell voltage drop associated with the agglomeration of Ni particles.

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M3 - Paper

AN - SCOPUS:31744436799

SP - 1267

EP - 1274

T2 - 9th International Symposium on Solid Oxide Fuel Cells, SOFC IX

Y2 - 15 May 2005 through 20 May 2005

ER -

Sulfur tolerance of solid oxide fuel cells

Abstract

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