Abstract
Solid oxide fuel cells with LaSr 2Fe 2CrO 9-δ-Gd 0.1Ce 0.9O 2-δ composite anodes were tested in H 2, H 2S-contaminated H 2, and CH 4 fuels as well as under redox cycling conditions. The La 0.9Sr 0.1Ga 0.8Mg 0.2O 3-δ electrolyte supported cells had La 0.4Ce 0.6O 2-δ barrier layers to prevent cation diffusion between LaSr 2Fe 2CrO 9-δ and La 0.9Sr 0.1Ga 0.8Mg 0.2O 3-δ. After an initial break-in where the performance improved slightly, the cells were stable in humidified H 2 with a power density > 0.4 W cm - 2 and an anode polarization resistance as low as 0.22 Ω cm 2. Anode polarization resistance showed little or no change after 15 redox cycles at 800 °C. Cell performance was stable with 22 ppm H 2S, with only a slight performance decrease relative to pure H 2, but higher H 2S concentrations caused continuous degradation. Also, the performance in humidified CH 4 fuel was quite low.
| Original language | English |
|---|---|
| Pages (from-to) | 1-5 |
| Number of pages | 5 |
| Journal | Solid State Ionics |
| Volume | 212 |
| DOIs | |
| Publication status | Published - Mar 29 2012 |
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Keywords
- Oxide anode
- Perovskite
- Redox
- Solid oxide fuel cell
- Sulfur tolerance
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Chemistry(all)
Cite this
Structural, chemical, and electrochemical characteristics of LaSr 2Fe 2CrO 9-δ-based solid oxide fuel cell anodes. / Haag, Jacob M.; Bierschenk, David M.; Barnett, Scott A.; Poeppelmeier, Kenneth R.
In: Solid State Ionics, Vol. 212, 29.03.2012, p. 1-5.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Structural, chemical, and electrochemical characteristics of LaSr 2Fe 2CrO 9-δ-based solid oxide fuel cell anodes
AU - Haag, Jacob M.
AU - Bierschenk, David M.
AU - Barnett, Scott A.
AU - Poeppelmeier, Kenneth R
PY - 2012/3/29
Y1 - 2012/3/29
N2 - Solid oxide fuel cells with LaSr 2Fe 2CrO 9-δ-Gd 0.1Ce 0.9O 2-δ composite anodes were tested in H 2, H 2S-contaminated H 2, and CH 4 fuels as well as under redox cycling conditions. The La 0.9Sr 0.1Ga 0.8Mg 0.2O 3-δ electrolyte supported cells had La 0.4Ce 0.6O 2-δ barrier layers to prevent cation diffusion between LaSr 2Fe 2CrO 9-δ and La 0.9Sr 0.1Ga 0.8Mg 0.2O 3-δ. After an initial break-in where the performance improved slightly, the cells were stable in humidified H 2 with a power density > 0.4 W cm - 2 and an anode polarization resistance as low as 0.22 Ω cm 2. Anode polarization resistance showed little or no change after 15 redox cycles at 800 °C. Cell performance was stable with 22 ppm H 2S, with only a slight performance decrease relative to pure H 2, but higher H 2S concentrations caused continuous degradation. Also, the performance in humidified CH 4 fuel was quite low.
AB - Solid oxide fuel cells with LaSr 2Fe 2CrO 9-δ-Gd 0.1Ce 0.9O 2-δ composite anodes were tested in H 2, H 2S-contaminated H 2, and CH 4 fuels as well as under redox cycling conditions. The La 0.9Sr 0.1Ga 0.8Mg 0.2O 3-δ electrolyte supported cells had La 0.4Ce 0.6O 2-δ barrier layers to prevent cation diffusion between LaSr 2Fe 2CrO 9-δ and La 0.9Sr 0.1Ga 0.8Mg 0.2O 3-δ. After an initial break-in where the performance improved slightly, the cells were stable in humidified H 2 with a power density > 0.4 W cm - 2 and an anode polarization resistance as low as 0.22 Ω cm 2. Anode polarization resistance showed little or no change after 15 redox cycles at 800 °C. Cell performance was stable with 22 ppm H 2S, with only a slight performance decrease relative to pure H 2, but higher H 2S concentrations caused continuous degradation. Also, the performance in humidified CH 4 fuel was quite low.
KW - Oxide anode
KW - Perovskite
KW - Redox
KW - Solid oxide fuel cell
KW - Sulfur tolerance
UR - http://www.scopus.com/inward/record.url?scp=84857662179&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84857662179&partnerID=8YFLogxK
U2 - 10.1016/j.ssi.2012.01.037
DO - 10.1016/j.ssi.2012.01.037
M3 - Article
AN - SCOPUS:84857662179
VL - 212
SP - 1
EP - 5
JO - Solid State Ionics
JF - Solid State Ionics
SN - 0167-2738
ER -