Metallic mesoporous nanocomposites for electrocatalysis

被引：403

作者：

Ding, Y

Chen, MW

Erlebacher, J ^{[1
]}

机构：

[1] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA

[2] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA

[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 980, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 22期

关键词：

D O I：

10.1021/ja0320119

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We describe the fabrication, characterization, and applications of ultrathin, free-standing mesoporous metal membranes uniformly decorated with catalytically active nanoparticles. Platinum-plated nanoporous gold leaf (Pt-NPG) made by confining a plating reaction to occur within the pores of dealloyed silver/gold leaf is 100 nm thick and contains an extremely high, uniform dispersion of 3 nm diameter catalytic particles. This nanostructured composite holds promise as a prototypical member of a new class of fuel cell electrodes, showing good electrocatalytic performance at low platinum loading (less than 0.05 mg cm-2), while also maintaining long-term stability against coarsening and aggregation of catalytic nanoparticles. Copyright © 2004 American Chemical Society.

引用

页码：6876 / 6877

页数：2

共 10 条

[1]

Anderson ML, 2002, NANO LETT, V2, P235, DOI 10.1021/n1015707d

[2] Preparation of cross-sectional samples of proton exchange membrane fuel cells by ultramicrotomy for TEM [J].