Methanol electrooxidation on platinum/ruthenium nanoparticle catalysts

被引：176

作者：

Waszczuk, P

Solla-Gullón, J

Kim, HS

Tong, YY

Montiel, V

Aldaz, A

Wieckowski, A

机构：

[1] Univ Illinois, Dept Chem, Urbana, IL 61801 USA

[2] Univ Alicante, Dept Chem Phys, Alicante 03080, Spain

来源：

JOURNAL OF CATALYSIS | 2001年 / 203卷 / 01期

基金：

美国国家科学基金会;

关键词：

electrocatalysis; fuel cells; nanoparticle; anode; methanol;

D O I：

10.1006/jcat.2001.3389

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：

Using the spontaneous deposition method (W Chrzanowski and A. Wieckowski, Langmuir 13, 5974 (1997)), platinum nanoparticles were decorated with ruthenium to obtain a Pt/Ru catalyst with a packing density of up to 0.65 Ru atoms per Pt surface atom. The activity of this catalyst toward methanol electrooxidation was tested at electrode potentials of interest for fuel cells. The catalyst activity maximizes at ruthenium packing density 0.4-0.5, and the catalyst is twice as active (displays higher current densities normalized to real surface area) as the commercial 50: 50 Pt/Ru alloy catalyst. Hydrogen adsorption on the decorated Pt/Ru and Pt/Ru alloy surfaces is also reported. (C) 2001 Academic Press.

引用

页码：1 / 6

页数：6

共 38 条

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