Fabrication of catalytic electrodes for molten carbonate fuel cells
A porous layer of catalyst material suitable for use as an electrode in a molten carbonate fuel cell includes elongated pores substantially extending across the layer thickness. The catalyst layer is prepared by depositing particulate catalyst material into polymeric flocking on a substrate surface by a procedure such as tape casting. The loaded substrate is heated in a series of steps with rising temperatures to set the tape, thermally decompose the substrate with flocking and sinter bond the catalyst particles into a porous catalytic layer with elongated pores across its thickness. Employed as an electrode, the elongated pores provide distribution of reactant gas into contact with catalyst particles wetted by molten electrolyte.
- Assignee:
- Dept. of Energy, Washington, DC
- Patent Number(s):
- US 4780437
- OSTI ID:
- 6270595
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
CASTING
CATALYSTS
CRYSTAL STRUCTURE
DEPOSITION
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYTES
FABRICATION
FUEL CELLS
HIGH-TEMPERATURE FUEL CELLS
LAYERS
MICROSTRUCTURE
MOLTEN CARBONATE FUEL CELLS
PARTICLES
PARTICULATES
POLYMERS
POROSITY
SUBSTRATES
THERMAL DEGRADATION