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

被引：333

作者：

Mazumder, Vismadeb ^{[1
]}

Chi, Miaofang ^{[2
]}

More, Karren L. ^{[2
]}

Sun, Shouheng ^{[1
]}

机构：

[1] Brown Univ, Dept Chem, Providence, RI 02912 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 23期

关键词：

ELECTROCATALYSTS; MONOLAYER;

D O I：

10.1021/ja1024436

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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)(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.

引用

页码：7848 / +

页数：4

共 15 条

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