AuPt core-shell nanocatalysts with bulk Pt activity

被引：49

作者：

Hartl, Katrin ^{[1
,4
]}

Mayrhofer, Karl J. J. ^{[3
]}

Lopez, Marco

Goia, Dan ^{[2
]}

Arenz, Matthias ^{[1
]}

机构：

[1] Univ Copenhagen, Dept Chem, DK-2100 Copenhagen, Denmark

[2] Clarkson Univ, Potsdam, NY 13676 USA

[3] Max Planck Inst Iron Res, Dusseldorf, Germany

[4] Tech Univ Munich, D-8000 Munich, Germany

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 11期

关键词：

Core-shell catalyst; Oxygen reduction reaction; Fuel cell; OXYGEN REDUCTION; PLATINUM-MONOLAYER; ELECTROCATALYSTS; CATALYSTS;

D O I：

10.1016/j.elecom.2010.08.013

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In the presented work, the evaluation of an unsupported AuPt core-shell catalyst for the oxygen reduction reaction is introduced. Applying only basic chemicals in an upscalable synthesis route, it is demonstrated that uniform, flat, and complete Pt layers around a spherical Au core are obtained. The electrocatalytic measurements show that the surface area specific activity of the AuPt core-shell catalyst towards the important oxygen reduction reaction equals the one of polycrystalline bulk Pt. To our knowledge, this is the first time that the unfavorable particle size effect of Pt nanoparticles could be by-passed for a nanoscale catalyst. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1487 / 1489

页数：3

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