Unique CO-tolerance of Pt-WOx materials

被引：65

作者：

Micoud, F. ^{[1
]}

Maillard, F. ^{[1
]}

Gourgaud, A. ^{[1
]}

Chatenet, M. ^{[1
]}

机构：

[1] UJF, Grenoble INP, Lab Electrochim & Phys Chem Mat & Interfaces, CNRS,UMR 5631, F-38402 St Martin Dheres, France

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 03期

关键词：

CO-tolerance; Nanoparticle; Platinum; Tungsten oxide; PEMFC; MONOLAYER OXIDATION; PARTICLE-SIZE; FUEL-CELLS; ELECTROOXIDATION; ELECTROCATALYSTS; CATALYSTS; TUNGSTEN; NANOPARTICLES; PERFORMANCE; ELECTRODE;

D O I：

10.1016/j.elecom.2009.01.007

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Well-defined tungsten-oxide-supported platinum nanoparticles (Pt/WOx) were elaborated by impregnation-reduction of a platinum salt onto commercial monoclinic WO3. Field-emission gun scanning electron microscopy (FEG-SEM) and transmission electron microscopy (TEM) revealed that the Pt particles are well-distributed on the oxide support, present a narrow particle size distribution centered on ca. 2-3 nm and a low degree of agglomeration. Carbon black was added to ensure electronic percolation in the electrodes during the electrochemical measurements. COads electrooxidation currents were monitored at potentials as low as 0.1 V vs. RHE on Pt/WOx, demonstrating high CO-tolerance compared to carbon-supported Pt or PtRu catalysts. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：651 / 654

页数：4

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