Recent advances in platinum monolayer electrocatalysts for oxygen reduction reaction: Scale-up synthesis, structure and activity of Pt shells on Pd cores

被引：237

作者：

Sasaki, K. ^{[1
]}

Wang, J. X. ^{[1
]}

Naohara, H. ^{[2
]}

Marinkovic, N. ^{[3
]}

More, K. ^{[4
]}

Inada, H. ^{[5
]}

Adzic, R. R. ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA

[2] Toyota Motor Co Ltd, Susono 4101193, Japan

[3] Univ Delaware, Dept Chem Engn, Newark, DE 19716 USA

[4] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[5] Hitachi High Technol Amer, Pleasanton, CA 94588 USA

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 08期

关键词：

Oxygen reduction; Platinum; Electrocatalysis; Fuel cells;

D O I：

10.1016/j.electacta.2009.11.106

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We have established a scale-up synthesis method to produce gram-quantities of Pt monolayer electrocatalysts. The core-shell structure of the Pt/Pd/C electrocatalyst has been verified using the HAADF-STEM Z-contrast images, STEM/EELS, and STEM/EDS line profile analysis. The atomic structure of this electrocatalyst and formation of a Pt monolayer on Pd nanoparticle surfaces were examined using in situ EXAFS. The Pt mass activity of the Pt/Pd/C electrocatalyst for ORR is considerably higher than that of commercial Pt/C electrocatalysts. The results with Pt monolayer electrocatalysts may significantly impact science of electrocatalysis and fuel-cell technology, as they have demonstrated an exceptionally effective way of using Pt that can resolve problems of other approaches, including electrocatalysts' inadequate activity and high Pt content. Published by Elsevier Ltd.

引用

页码：2645 / 2652

页数：8

共 18 条

[1] Platinum monolayer fuel cell electrocatalysts [J].