Electrocatalyst-support interactions
The maximum utilization of noble metals as heterogeneous catalysts is achieved by dispersing the noble metals as small particles supported on a porous, high surface area powder. In some studies with supported noble metal catalysts, it has been reported that the metal particle interacts with the support material and that the interaction affects the catalytic properties of the metal. Experimental studies on metal-support interactions that are pertinent to electrocatalysis will be discussed. Platinum supported on carbon black is one of the most active electrocatalysts for oxygen reduction in phosphoric acid fuel cells. In the acid environment at 100 to 200/sup 0/C, the Pt surface area decreases with time due to the growth of the supported Pt particles. The effects of a liquid-phase environment on the particle growth mechanism of supported Pt catalysts is discussed. 60 references.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 6538287
- Report Number(s):
- CONF-7805100-1
- Resource Relation:
- Conference: Workshop on the electrocatalysis of fuel cell reactions, Upton, NY, USA, 15 May 1978
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ACID ELECTROLYTE FUEL CELLS
CATALYSTS
SINTERING
PLATINUM
CARBON BLACK
CATALYSIS
CATALYTIC EFFECTS
CATHODES
CHEMICAL REACTIONS
ELECTRIC CONDUCTIVITY
GOLD
OXYGEN
PHOSPHORIC ACID
REDUCTION
SILVER
SUBSTRATES
SUPPORTS
TRANSITION ELEMENTS
CARBON
CRYOGENIC FLUIDS
DIRECT ENERGY CONVERTERS
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
FABRICATION
FLUIDS
FUEL CELLS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MECHANICAL STRUCTURES
METALS
NONMETALS
PHYSICAL PROPERTIES
PLATINUM METALS
300503* - Fuel Cells- Materials
Components
& Auxiliaries