The production of porous layers for the solid oxide fuel cell by vacuum plasma spraying

Book · Sun Dec 31 04:00:00 EST 1995

OSTI ID:379564

Fendler, E; Henne, R; Lang, M ^[1]

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1. DLR-Inst. of Technical Thermodynamics, Stuttgart (Germany)

The vacuum plasma spraying (VPS) method was used to produce porous perovskite and Ni/YSZ (Yttria Stabilized Zirconia) cermet layers as cathode and anode for a SOFC, respectively. The perovskite powder was deposited without decomposition of the perovskite phase due to the use of Laval-nozzles and the adaption of spray parameters. The deposition of porous Ni/YSZ cermets demanded a modification of the Laval-nozzle. With this modification high deposition rates compared to conventional nozzles could be attained. The deposition of NiAl-YSZ and subsequently etching of Al is a successful method to produce anode layers with very fine porosity. Up to now the feasibility of producing porous deposits was examined. The next step of investigation will be the electrochemical testing of the electrodes. The results of those tests will influence the further development of anode`s and cathode`s microstructure.

• OSTI ID: 379564
• Report Number(s): CONF-9509182--; ISBN 0-87170-541-9
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE
AGGLOMERATION
ALUMINIUM ALLOYS
COMPOSITE MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRODES
ETCHING
EXPERIMENTAL DATA
GRAIN SIZE
LANTHANUM OXIDES
MANGANESE OXIDES
MORPHOLOGY
NICKEL
NICKEL ALLOYS
OPTICAL MICROSCOPY
PLASMA ARC SPRAYING
POWDERS
SCANNING ELECTRON MICROSCOPY
SOLID ELECTROLYTE FUEL CELLS
STRONTIUM OXIDES
X-RAY DIFFRACTION
YTTRIUM OXIDES
ZIRCONIUM OXIDES