TY - JOUR
T1 - Short-period segmented-in-series solid oxide fuel cells on flattened tube supports
AU - Pillai, Manoj R.
AU - Gostovic, Dan
AU - Kim, Ilwon
AU - Barnett, Scott A.
N1 - Funding Information:
The authors thank Tammy Lai, Yi Jiang, Nikkia McDonald, and Negar Mansourian for useful discussions and help with the experimental work. The authors also thank Scott Swartz, Bill Dawson, Mick Day, Ed Sabolsky, Anil Prem, and Dan Kearl for a fruitful collaboration on the segmented-in-series SOFC design and materials. The authors gratefully acknowledge the financial support of the Advanced Technology Program and a Department of Energy Phase II SBIR grant.
PY - 2007/1/1
Y1 - 2007/1/1
N2 - Segmented-in-series solid oxide fuel cells (SIS-SOFCs) were prepared on flattened-tube partially stabilized zirconia supports. The distinguishing characteristic of these cells was the short repeat period, 2.4 mm, and small active cell length, 1.3 mm, compared to ≈10 mm in previous SIS-SOFCs. The support tubes, formed by gelcasting, were bisque fired and then screen printing was used to sequentially deposit Ni-YSZ anodes, YSZ electrolytes, and Pt-YSZ composite interconnects. After high-temperature co-firing, LSM-YSZ and LSM cathode layers were screen printed and fired. Each flattened tube side had 12-16 individual cells. For testing, the open tube ends were sealed and humidified hydrogen flowed inside of the tubes; air was flowed over the outside of the tubes. Maximum total power at 800 °C was ≈8 W and maximum power density was ≈0.7 W cm-2, calculated using cell active area. Good stability was observed during a ≈650 h steady-state test. Excellent stability was also observed over ≈20 redox cycles.
AB - Segmented-in-series solid oxide fuel cells (SIS-SOFCs) were prepared on flattened-tube partially stabilized zirconia supports. The distinguishing characteristic of these cells was the short repeat period, 2.4 mm, and small active cell length, 1.3 mm, compared to ≈10 mm in previous SIS-SOFCs. The support tubes, formed by gelcasting, were bisque fired and then screen printing was used to sequentially deposit Ni-YSZ anodes, YSZ electrolytes, and Pt-YSZ composite interconnects. After high-temperature co-firing, LSM-YSZ and LSM cathode layers were screen printed and fired. Each flattened tube side had 12-16 individual cells. For testing, the open tube ends were sealed and humidified hydrogen flowed inside of the tubes; air was flowed over the outside of the tubes. Maximum total power at 800 °C was ≈8 W and maximum power density was ≈0.7 W cm-2, calculated using cell active area. Good stability was observed during a ≈650 h steady-state test. Excellent stability was also observed over ≈20 redox cycles.
KW - Gelcasting
KW - Multi-cell stack
KW - Redox cycling
KW - Screen printing
KW - Segmented-in-series
KW - Solid oxide fuel cells
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U2 - 10.1016/j.jpowsour.2006.09.079
DO - 10.1016/j.jpowsour.2006.09.079
M3 - Article
AN - SCOPUS:33845640936
SN - 0378-7753
VL - 163
SP - 960
EP - 965
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 2
ER -
