FePt Nanoparticles Assembled on Graphene as Enhanced Catalyst for Oxygen Reduction Reaction

FePt Nanoparticles Assembled on Graphene as Enhanced Catalyst for Oxygen Reduction Reaction
Custom Listing: 

Guo, S, Sun S.  2012.  FePt Nanoparticles Assembled on Graphene as Enhanced Catalyst for Oxygen Reduction Reaction. Journal of the American Chemical Society. 134(5):2492-2495.

TitleFePt Nanoparticles Assembled on Graphene as Enhanced Catalyst for Oxygen Reduction Reaction
Publication TypeJournal Article
Year of Publication2012
AuthorsGuo S, Sun S
JournalJournal of the American Chemical Society
Volume134
Issue5
Pagination2492 - 2495
Date Published02/2012
ISSN1520-5126
Abstract

Seven-nanometer FePt nanoparticles (NPs) were synthesized and assembled on graphene (G) by a solution-phase self-assembly method. These G/FePt NPs were a more active and durable catalyst for oxygen reduction reaction (ORR) in 0.1 M HClO4 than the same NPs or commercial Pt NPs deposited on conventional carbon support. The G/FePt NPs annealed at 100 °C for 1 h under Ar + 5% H2 exhibited specific ORR activities of 1.6 mA/cm2 at 0.512 V and 0.616 mA/cm2 at 0.557 V (vs Ag/AgCl). As a comparison, the commercial Pt NPs (2–3 nm) had specific activities of 0.271 and 0.07 mA/cm2 at the same potentials. The G/FePt NPs were also much more stable in the ORR condition and showed nearly no activity change after 10 000 potential sweeps. The work demonstrates that G is indeed a promising support to improve NP activity and durability for practical catalytic applications.

URLhttp://pubs.acs.org/doi/full/10.1021/ja2104334
DOI10.1021/ja2104334
Short TitleJ. Am. Chem. Soc.