Preparation and evaluation of advanced electrocatalysts for phosphoric acid fuel cells

Technical Report · Tue Dec 01 04:00:00 EST 1981

OSTI ID:6942595

Stonehart, P; Baris, J; Hochmuth, J; Pagliaro, P

Two cooperative phenomena are required the development of highly efficient porous electrocatalysts: (1) is an increase in the electrocatalytic activity of the catalyst particle and (2) is the availability of that electrocatalyst particle for the electromechanical reaction. The two processes interact with each other so that improvements in the electrochemical activity must be coupled with improvements in the availability of the electrocatalyst for reaction. Cost effective and highly reactive electrocatalysts were developed. The utilization of the electrocatalyst particles in the porous electrode structures was analyzed. It is shown that a large percentage of the electrocatalyst in anode structures is not utilized. This low utilization translates directly into a noble metal cost penalty for the fuel cell.

• Research Organization: Stonehart Associates, Inc., Madison, CT (USA)
• OSTI ID: 6942595
• Report Number(s): NASA-CR-165594
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
ACID ELECTROLYTE FUEL CELLS
CATALYSTS
COST
DIRECT ENERGY CONVERTERS
ELECTROCATALYSTS
ELECTROCHEMICAL CELLS
ELEMENTS
FABRICATION
FUEL CELLS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
METALS
PERFORMANCE
PHOSPHORIC ACID
TRANSITION ELEMENTS