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Stable and Efficient Advanced Oxygen Reduction Alloy Catalysts for PEM Fuel Cells

Completed TRL 4 (started at 3, targeting 4)

Description

Human exploration of space demands highly efficient, light-weight, long lifetime and maintenance-free power generation systems. Energy storage applications, human-rated exploration vehicles, in-space propulsion systems, un-manned aerial vehicles, robotic and manned rovers require steady state output electricity generation to maximize the operational capabilities and successfully achieve complex missions. Proton exchange membrane (PEM) based fuel cell systems offer the highest efficiency and the lowest weight energy conversion systems to generate electricity for space applications. The efficiency and lifetime of the current PEM fuel cell systems is mainly governed by the oxygen reduction reaction (ORR) electrocatalysts. Lynntech proposes a novel electro-catalytic approach with an advanced ORR electrocatalyst that utilizes a stabilized platinum alloy supported on an electrically/ionically conductive mixed oxide that addresses the shortcomings of the state-of-the-art ORR Pt Black or carbon supported catalysts. Alloying with transition metals improves the microstructural properties of platinum and increases ORR rate, therefore increases the efficiency. The mixed oxide component effectively decomposes peroxide radicals and suppresses the peroxide radical production, which minimizes the peroxide radical damages on the membrane, hence leading to significant increase in the fuel cell stack lifetime.

Benefits

Lynntech's Advanced ORR catalyst technology has applications in the fuel cell industry in the following markets: Stationary power systems (Telecom power, backup power, primary power); transportation power system (automotive fuel cell power, fork lifts); portable power systems (portable generators, portable battery chargers); and power systems for niche applications (space applications, un-manned aerial vehicles).

Lynntech's advanced ORR catalyst technology can address the need for lighter weight, more reliable regenerative fuel cell systems for electrical energy storage applications. Such systems are required for NASA's future human exploration missions, particularly for stationary power for permanent bases, for large extra-terrestrial and interplanetary exploration and cargo ships, and for human-rated exploration vehicles, in-space propulsion systems, un-manned aerial vehicles, robotic and manned rovers.

Details

Technology areaAerospace Power and Energy Storage > Power Generation and Energy Conversion > Dynamic Energy Conversion
ProgramSmall Business Innovation Research/Small Business Tech Transfer (SBIR/STTR)
Lead organizationLynntech, Inc., College Station, TX
Start date2011-02-18
End date2011-08-18

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