Multimetallic Au/FePt3 Nanoparticles as Highly Durable Electrocatalyst
Multimetallic Au/FePt3 Nanoparticles as Highly Durable Electrocatalyst
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DOI：
10.1021/nl102369k
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发表时间：
2011-03-01
期刊：
影响因子：
10.8
通讯作者：
Stamenkovic, Vojislav R.
中科院分区：
文献类型：
--
作者：
Wang, Chao;van der Vliet, Dennis;Stamenkovic, Vojislav R.
我们报告了多金属金/铂双金属纳米粒子的设计和合成，作为质子交换膜燃料电池中氧还原反应（ORR）的高度耐用的电催化剂。该系统首先在 Au(111) 表面上沉积的明确定义的 Pt 和 FePt 薄膜上进行研究，这指导了新型合成路线的开发，以开发形状控制的涂有 Pt 双金属合金的 Au 纳米颗粒。事实证明，这些多金属 Au/FePt3 纳米颗粒既具有 Pt 双金属合金的高催化活性，又具有定制形态和成分分布的优异耐久性，质量活性比 Pt 催化剂提高了 1 个数量级以上。所报道的明确表面和纳米颗粒合成之间的协同作用为先进功能纳米材料提供了一种有说服力的方法。
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/FePt3 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.