Stabilizing platinum in phosphoric acid fuel cells. First quarterly report for 1981, December 1980-March 1981
The cathode of the phosphoric acid fuel cell uses a high-surface-area platinum catalyst supported on a carbon substrate. During operation, the small platinum crystallites sinter, causing loss in cell performance. The objective of this project is to develop a support that will stabilize platinum in the high-surface-area condition by retarding or preventing the sintering process. The approach is to form etch pits in the carbon by oxidizing the carbon in the presence of a metal oxide catalyst, remove the metal oxide by an acid wash, and then deposit platinum in these pits. The project's first quarter experimental results confirm the formation of etch pits in each of the three supports chosen for investigation: Vulcan XC-72R, Vulcan XC-72 that has been graphitized at 2500/sup 0/C, and Shawinigan Acetylene Black.
- Research Organization:
- Institute of Gas Technology, Chicago, IL (USA)
- DOE Contract Number:
- AI01-80ET17088
- OSTI ID:
- 6505751
- Report Number(s):
- DOE/NASA/0208-1; NASA-CR-165311
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stabilizing platinum in phosphoric acid fuel cells. Second quarterly report, April-June 1981
Stabilizing platinum in phosphoric acid fuel cells. Final report, December 1980-March 1982
Related Subjects
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
ACID ELECTROLYTE FUEL CELLS
CARBON
CATALYST SUPPORTS
CATALYSTS
CATHODES
CHEMICAL REACTIONS
DIRECT ENERGY CONVERTERS
ELECTROCATALYSTS
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
ETCHING
FABRICATION
FUEL CELLS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
METALS
NONMETALS
OXIDATION
PHOSPHORIC ACID
PLATINUM
PLATINUM METALS
SINTERING
STABILIZATION
SURFACE FINISHING
TRANSITION ELEMENTS