Methanol Oxidation Activity of PdRu Alloy Nanoparticles in Direct Methanol Fuel Cells

被引：20
|
作者：
Fisher, J. M. [1 ]
Cabello-Moreno, N. [1 ]
Christian, E. [1 ]
Thompsett, D. [1 ]
机构：
[1] Johnson Matthey Technol Ctr, Reading RG4 9NH, Berks, England
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2009年 / 12卷 / 05期
关键词：
catalysts; direct methanol fuel cells; nanoparticles; oxidation; palladium alloys; reduction (chemical); ruthenium alloys; SURFACE SEGREGATION; ELECTROOXIDATION; CATALYSTS;
D O I：
10.1149/1.3095675
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A carbon-supported PdRu (1:1) alloy was prepared by reduction of a supported mixed metal oxide precursor. The alloy phase was found to segregate on heating to Ru-rich and pure Pd phases. The single-phase alloy was evaluated for methanol oxidation in a membrane electrode assembly half-cell configuration, along with pure Pd, Ru, and benchmark PtRu catalysts. The mass activity of the PdRu was found to be at least an order of magnitude less than the PtRu catalyst. The cycle stability of the PdRu was assessed and found to be superior to pure Pd.
引用
收藏
页码：B77 / B81
页数：5
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