CHED 1747 |
| Successful integration of stainless steel as the support layer in a solid oxide fuel cell (SOFC) improves mechanical integrity and reduces costs associated with ceramic components. Replacement of nickel cermet composites by porous stainless steel in the support layer of a planar SOFC was investigated by College of DuPage students during their involvement in a Faculty and Student Team (FaST). They developed slurry formulations for tape casting layers from stainless steel powder. Sintering of the “green” tapes was characterized using a combination of dilatometry and thermogravimetric analysis. Layers combining uniform porosity with mechanical strength were produced successfully using two different slurry systems. Multilayer stacks comprising ceramic electrolyte, nickel anode and stainless steel support layers were fabricated using tape casting. Scanning electron microscopy was used to investigate elemental migration during sintering. High surface area and porosity in the anode layer was maintained during sintering, while high density and integrity was retained in the electrolyte layer. |
|
Broadening Participation in Undergraduate Research
1:30 PM-4:05 PM, Wednesday, March 28, 2007 McCormick Place North -- Room N227B, Level 2, Oral
Division of Chemical Education |