Influence of metal-support interaction in Pt/C on CO and methanol oxidation reactions

被引：43

作者：

Hall, SC

Subramanian, V

Teeter, G

Rambabu, B ^{[1
]}

机构：

[1] So Univ, Surface Sci Spect & Solid State Ion Lab, Baton Rouge, LA 70813 USA

[2] So Univ, Dept Phys, Baton Rouge, LA 70813 USA

[3] A&M Coll, Baton Rouge, LA 70813 USA

[4] NREL, Surface Anal Lab, Golden, CO 80401 USA

来源：

SOLID STATE IONICS | 2004年 / 175卷 / 1-4期

关键词：

fuel cells; DMFC; methanol oxidation; nanostructured; electrocatalysts;

D O I：

10.1016/j.ssi.2004.08.030

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the synthesis and spectro-electrochemical characterization of platinum black and carbon-supported platinum with varying amounts of carbon support for fuel cell applications. The Structural aspects of the carbon-supported Pt-catalysts were Studied using XRD, HRTEM and XPS. The broad XRD peaks indicated the presence of nanoparticles of Pt, which was well complemented by the HRTEM studies. The valence states and the variation of the binding energy with respect to the particle size of the electrocatalysts were elucidated by XPS studies. The metal-support interaction in these carbon-platinum electrocatalysts and their influence on the oxidation of CO and methanol are also reported. The nanosturucture nature of the catalysts and its influence on the methanol oxidation are related and discussed. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：809 / 813

页数：5

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