Highly Stable and CO-Tolerant Pt/Ti0.7W0.3O2 Electrocatalyst for Proton-Exchange Membrane Fuel Cells

被引：140

作者：

Wang, Deli ^{[1
]}

Subban, Chinmayee V. ^{[1
]}

Wang, Hongsen ^{[1
]}

Rus, Eric ^{[1
]}

DiSalvo, Francis J. ^{[1
]}

Abruna, Hector D. ^{[1
]}

机构：

[1] Cornell Univ, Dept Chem & Chem Biol, Ithaca, NY 14853 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 30期

关键词：

CARBON-MONOXIDE; ANODE ELECTROCATALYSTS; TUNGSTEN-OXIDE; OXIDATION; ELECTRODES; CATALYSTS; PLATINUM; PERFORMANCE; COMPOSITE; METHANOL;

D O I：

10.1021/ja102931d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The current materials used in proton-exchange membrane fuel cells (PEMFCs) are not sufficiently durable for commercial deployment. One of the major challenges lies in the development of an inexpensive, efficient, and CO-tolerant anode catalyst. Here we report the unique CO-tolerant property of Pt nanoparticles supported on Ti0.7W0.3O2. The Ti0.7W0.3O2 nanoparticles (50 nm) were synthesized via a sol-gel process and platinized using an impregnation-reduction technique. Electrochemical studies of Pt/Ti0.7W0.3O2 show unique CO-tolerant electrocatalytic activity for hydrogen oxidation compared to commercial E-TEK PtRu/C catalysts. Differential electrochemical mass spectrometry measurements show the onset potential for CO oxidation on Pt/Ti0.7W0.3O2 to be below 0.1 V (vs RHE). Pt/Ti0.7W0.3O2 is a promising new anode catalyst for PEMFC applications.

引用

页码：10218 / 10220

页数：3

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