Core/Shell Pd/FePt Nanoparticles as an Active and Durable Catalyst for the Oxygen Reduction Reaction

Journal Article · Thu Dec 31 23:00:00 EST 2009 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/ja1024436· OSTI ID:989149

Mazumder, Vismadeb ^[1]; Chi, Miaofang ^[2]; More, Karren Leslie ^[2]; Sun, Shouheng ^[1]

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1. Brown University
2. ORNL

We report a unique synthesis of core/shell Pd/FePt nanoparticles (NPs) and their catalysis of the oxygen reduction reaction (ORR). The uniform FePt shell is formed by controlled nucleation of Fe(CO){sub 5} in the presence of a Pt salt and Pd NPs at designated reaction temperatures. The Pd/FePt NPs show FePt shell-dependent catalytic properties, and those having a 1 nm FePt shell exhibit a drastic increase in durability and activity (15 times more active with a 140 mV gain in onset potential in comparison with those having a 3 nm coating). These Pd/FePt NPs are promising new catalysts for practical fuel cell applications.

• Research Organization: Oak Ridge National Laboratory (ORNL); Shared Research Equipment Collaborative Research Center
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 989149
• Journal Information: Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 23 Vol. 132; ISSN 1520-5126; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
CATALYSIS
CATALYSTS
FUEL CELLS
NUCLEATION
OXYGEN
SYNTHESIS