Anodic Catalysts for Oxidation of Carbon-Containing Fuels

ANODIC CATALYSTS FOR OXIDATION OF CARBON-CONTAINING FUELS 

Department of Chemical and Nuclear Engineering oral Center for Emerging Energy Techrwlogies, University of New Mexico, Albuquerque, NM. USA 

Universal Technology Corporation, Dayton, OH, USA Airbase Sciences Branch, Air Force Research Laboratory, Tyndall Air Force Base, EE USA 

Oxidoreductase enzymes include dehydrogenases, reductases, and oxidases that typically contain flavin adenine dinucleotide (FAD), nicotinamide adenine dinucleotide phosphate (NAD(P) ), or pyrroloquinohne quinone (PQQ) as redox cofactors. Although some specific enzymes possess cofactors with theoretically low redox potentials, this does not always translate to efficient performance when immobilized onto electrodes for BFCs. The caveat provides a need to study 

Enzymatic Fuel Cells From Fundamentals to Applications, First Edition. Edited by Heather R. Luckarift, Plamen Atanassov, and Gleim R. Johnson. 

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The catalyst is platinum-based for both the anode and cathode. To promote hydrogen oxidation, the anode uses either pure platinum metal catalyst or, as is common in most modem PEFC catalysts, a supported platinum catalyst, typically on carbon or graphite for pure hydrogen feed streams. For other fuels, such as reformate (containing H2, CO2, CO, and N2), the desired catalyst is an alloy of platinum containing mthenium. Oxygen reduction at the cathode may use either the platinum metal or the supported catalyst. 

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