High performance solid oxide fuel cell cathode fabricated by electrochemical vapor deposition
- Osaka Gas Co. Ltd. (Japan). Fundamental Research Labs.
La(Sr)MnO[sub 3] cathodes have been investigated as high temperature oxygen reduction electrodes in the solid oxide fuel cells (SOFCs). The cathodes consist of 10 mole percent of yttria stabilized zirconia (YSZ) thin film electrolyte layer deposited on a porous La[sub 0.81]Sr[sub 0.09]MnO[sub 3] tube using the electrochemical vapor deposition method. The La(Sr)MnO[sub 3]/YSZ cathodes have different electrochemical properties from those fabricated with the sintering method. The cathode polarization was about 1 mV at a current density of 1.5 A/cm[sup 2] in oxygen at 1,000 C. This type of cathode has an extremely large phase boundary and large interfacial capacitance (more than 1 F/cm[sup 2]) which is approximately proportional to the oxygen partial pressure.
- OSTI ID:
- 7186588
- Journal Information:
- Journal of the Electrochemical Society; (United States), Vol. 141:7; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
CATHODES
FABRICATION
LANTHANUM OXIDES
ELECTRODEPOSITED COATINGS
VAPOR DEPOSITED COATINGS
MANGANESE OXIDES
SOLID ELECTROLYTE FUEL CELLS
STRONTIUM OXIDES
ZIRCONIUM OXIDES
CHEMICAL VAPOR DEPOSITION
ELECTRODEPOSITION
ELECTRICAL PROPERTIES
YTTRIUM OXIDES
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL COATING
COATINGS
DEPOSITION
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYSIS
FUEL CELLS
LANTHANUM COMPOUNDS
LYSIS
MANGANESE COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
STRONTIUM COMPOUNDS
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
300503* - Fuel Cells- Materials
Components
& Auxiliaries
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication