Multimetallic Au/FePt{sub 3} nanoparticles as highly durable electrocatalyst.
- Center for Nanoscale Materials
We report the design and synthesis of multimetallic Au/Pt-bimetallic nanoparticles as a highly durable electrocatalyst for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells. This system was first studied on well-defined Pt and FePt thin films deposited on a Au(111) surface, which has guided the development of novel synthetic routes toward shape-controlled Au nanoparticles coated with a Pt-bimetallic alloy. It has been demonstrated that these multimetallic Au/FePt{sub 3} nanoparticles possess both the high catalytic activity of Pt-bimetallic alloys and the superior durability of the tailored morphology and composition profile, with mass-activity enhancement of more than 1 order of magnitude over Pt catalysts. The reported synergy between well-defined surfaces and nanoparticle synthesis offers a persuasive approach toward advanced functional nanomaterials.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); NSF/DMR; Brown Seed Fund
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1010491
- Report Number(s):
- ANL/MSD/JA-67623; TRN: US201108%%387
- Journal Information:
- Nano Lett., Vol. 11, Issue 3 ; Aug. 12, 2010
- Country of Publication:
- United States
- Language:
- ENGLISH
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