Multimetallic Au/FePt3 nanoparticles as highly durable electrocatalyst.
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(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.
Wang
Chao
C
Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
van der Vliet
Dennis
D
More
Karren L
KL
Zaluzec
Nestor J
NJ
Peng
Sheng
S
Sun
Shouheng
S
Daimon
Hideo
H
Wang
Guofeng
G
Greeley
Jeffrey
J
Pearson
John
J
Paulikas
Arvydas P
AP
Karapetrov
Goran
G
Strmcnik
Dusan
D
Markovic
Nenad M
NM
Stamenkovic
Vojislav R
VR