CHEMICALLY GROWN GOLD-CARBON ELECTROCATALYST MATERIAL FOR HIGH TEMPERATURE AND PRESSURE ALKALINE FUEL CELL CATHODES (PE-058A)

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$49,976.00
Award Year:
1987
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
5071
Agency Tracking Number:
5071
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Research Park, P.o. Box 3100, Andover, MA, 01810
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
Dr. E. Jennings Taylor
Investigator
() -
Research Institution:
n/a
Abstract
WE PROPOSE TO PREPARE A MATERIAL IN WHICH A HIGHLY DISPERSEDCATALYST IS CHEMICALLY BONDED TO A CARBON FILAMENT SUPPORT MATERIAL FOR USE IN THE FABRICATION OF CATHODES FOR ALKALINEFUEL CELLS. THE CARBON FILAMENTS WILL BE GROWN ON GOLD OR GOLD ALLOY CATALYSTS FROM HOT FLOWING GASES. THE ELECTROCATALYST IS EXPECTED TO EXHIBIT THE IMPROVED SINTERING AND CORROSION RESISTANCE NEEDED FOR PRESSURIZED ALKALINE FUEL CELL OPERATION. THESE MATERIALS WILL BE PRODUCED FROM A VARIETY OF HOT GAS ENVIRONMENTS AS WELL AS FROM VARIOUS DISPERSED CATALYST PRECURSORS. THE ATMOSPHERIC AND PRESSURIZED CORROSION BEHAVIOR OF THESE MATERIALS IN HOT POTASSIUM HYDROXIDE WILL BE DETERMINED AND COMPARED TO VARIOUS CARBON AND HEAT TREATED CARBON BASELINE MATERIALS. THE POTENTIAL BENEFITS FROM THE PROPOSED CHEMICALLY GROWN GOLD-CARBON MATERIAL ARE THREEFOLD: 1) CHEMICAL BONDING OF GOLD TO THE CARBON SUPPORTRESULTING IN LESS MOBILITY AND HENCE GREATER SINTERING RESISTANCE, 2) A CARBON WITH IMPROVED RESISTANCE TO ELECTROCHEMICAL OXIDATION, AND 3) STRONG-METAL-SUPPORT-INTERACTION (SMSI) EFFECTS WHICH COULD RESULT IN GREATER OXYGEN REDUCTION ACTIVITY.

* information listed above is at the time of submission.

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