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WARF: P140274US02

Platinum-Free Catalysts for Fuel Cells


INVENTORS -

Shannon Stahl, James Gerken, Colin Anson

The Wisconsin Alumni Research Foundation (WARF) is seeking commercial partners interested in developing a cost-saving electrocatalytic oxygen reduction scheme.
OVERVIEWFuel cells and other types of electrochemical cells rely on platinum cathodes to drive oxygen reduction. Although efficient, platinum cathodes are expensive given the element’s relative scarcity. One approach has been to surface coat ubiquitous substrates with cheaper metals such as iron and cobalt, but the search for alternative methods and materials continues.
THE INVENTIONUW–Madison researchers have developed a new scheme to improve the efficiency of oxygen reduction reactions in electrochemical cells. Their method combines a redox catalyst with a charge transfer mediator capable of transferring electrons and protons. Careful redox mediator/redox catalyst pairings avoid the need for expensive metal cathodes (or anodes). Favorable pairings include quinones with cobalt or iron-containing redox catalysts, and nitroxyl-type materials paired with nitric oxide-type redox catalysts.
APPLICATIONS
  • Improved catalysts for fuel cells (automotive, trains, stationary power sources) and electrosynthetic cells (e.g., reduction of carbon dioxide to hydrocarbons)
KEY BENEFITS
  • Enables lower cost, efficient catalysis
  • Outperforms existing technology
STAGE OF DEVELOPMENTActual – the inventors have tested two systems: (i) cobalt and benzoquinone and (ii) nitrogen oxide and TEMPO. Both showed improved electrochemical oxygen reduction compared to existing catalyst systems.

The development of this technology was supported by the WARF Accelerator Program. The Accelerator Program selects WARF’s most commercially promising technologies and provides expert assistance and funding to enable achievement of commercially significant milestones. WARF believes that these technologies are especially attractive opportunities for licensing.
ADDITIONAL INFORMATION
For More Information About the Inventors
Related Technologies
  • For information about the researchers’ development of mixed metal oxide catalysts for producing hydrogen from water, see WARF reference numbers:
  • P100096US01
  • P110007US02
  • P120118US02
Related Intellectual Property
Contact Information
For current licensing status, please contact Mark Staudt at mstaudt@warf.org or 608-960-9845.
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