Journal
RSC ADVANCES
Volume 2, Issue 32, Pages 12118-12121Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ra21921b
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Funding
- National Science Foundation [0967166, 1000068, 1210792]
- HeteroFoam Center, an Energy Frontier Research Center
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001061]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [0967166] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1210792] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1000068] Funding Source: National Science Foundation
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In this study, we have fabricated high performance low temperature solid oxide fuel cells (LT-SOFCs) with both acicular anodes and cathodes with thin Gd-doped ceria (GDC) electrolyte film. The acicular Ni-Gd0.1Ce0.9O2-delta (Ni-GDC) anode was prepared using freeze drying tape casting, while the hierarchically porous cathode with nano-size Sm0.5Sr0.5CoO3 (SSC) particles covering an acicular GDC skeleton was prepared by a combination of freeze drying tape casting and self-rising approaches. The acicular electrodes with 5-200 mm pores/channels enhance mass transport, while SSC particles of about 50 nm in the cathode promote electrochemical reactions. Cells which have this novel electrode architecture show a significantly high power output of 1.44 W cm(-2) and an extremely low cell polarization resistance of 0.0379 Omega cm(2) at 600 degrees C.
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