GRAPHITE AND METAL OXIDE CATALYST SUPPORTS FOR RECHARGEABLE OXYGEN ELECTRODES

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$500,000.00
Award Year:
1992
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
14432
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Matsi Inc.
430 Tenth Street Nw, Suite S-007, Atlanta, GA, 30318
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Ronald A. Putt
Principal Investigator
() -
Business Contact:
(404) 876-8009
Research Institution:
n/a
Abstract
METAL-AIR BATTERIES, NOTABLY ZINC-AIR AND IRON-AIR, ARE ATTRACTIVE CANDIDATES FOR ELECTRIC VEHICLE PROPULSION BECAUSE OF THEIR HIGH SPECIFIC ENERGY AND INHERENT SAFETY. THESE BATTERIES REQUIRE A RECHARGEABLE, OR BIFUNCTIONAL, OXYGEN ELECTRODE THAT GENERATES OXYGEN DURING CHARGE AND REDUCES IT DURING DISCHARGE. PHASE I OF THIS PROJECT SEEKS TO DEVELOP A STABLE CATALYST SUPPORT USING A THREE-PRONGED APPROACH. FIRST, THREE ALTERNATIVE CATALYST SUPPORTS ARE BEING DEVELOPED: (1) GRAPHITIZED CARBON (N774, SHAWINIGAN BLACK, AND CARBON 60, THE FIRST TWO OF WHICH HAVE SHOWN DRAMATICALLY IMPROVED STABILITY); (2) MANGANESE DIOXIDE, WHICH IS AN EXCELLENT CATALYST FOR OXYGEN REDUCTION; AND (3) LANTHANUM NICKELATE, WHICH ALSO SHOWS PROMISE AS BOTH A CATALYST AND A SUBSTRATE. SECOND, IMPROVED CATALYSTS FOR THE SUBSTRATES, WHICH LOWER THE OVERPOTENTIAL FOR OXYGEN EVOLUTION ARE BEING DEVELOPED, SPECIFICALLY COBALT TETRAMETHOXY PHENYL PORPHYRIN, MANGANESE DIOXIDE, NICKEL-COBALT SPINEL, AND A VERY PROMISING PEROVSKITE. THIRD, THE EFFECTS OF TEMPERATURE, CURRENT DENSITY, AND ELECTROLYTE CONCENTRATION ON LIFETIME ARE BEING QUANTIFIED TO COMPARE REAL-TIME ELECTRODE LIFETIMES UNDER NORMAL STRESSWITH THOSE UNDER ACCELERATED STRESS CONDITIONS.

* information listed above is at the time of submission.

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