Development of zirconia electrolyte films on porous doped lanthanum manganite cathodes by electrophoretic deposition
Conference
·
OSTI ID:20086894
Electrophoretic deposition (EPD) was explored as an inexpensive route for fabricating the 8 mol% yttria stabilized zirconia electrolyte in solid oxide fuel cells (SOFCs). Normally, deposition of particulate ceramic powders onto a sintered porous surface yields a non uniform coating which, after sintering, results in porosity, surface roughness and cracking in the coating. To overcome this problem, the present study used a fugitive graphite interlayer between the porous air electrode supported (AES) cathode tube (doped-LaMnO{sub 3}) and the deposited zirconia film. By this approach, a fairly dense green coating ({approximately}60%) was obtained, which yielded a smooth surface and pore-free microstructure after sintering. Preliminary results on the effect of a fugitive interlayer on the unfired (green) and fired zirconia coatings are discussed.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (US)
- Sponsoring Organization:
- Gas Research Institute
- OSTI ID:
- 20086894
- Country of Publication:
- United States
- Language:
- English
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