Ordered Hierarchical Nanostructured Carbon as a Highly Efficient Cathode Catalyst Support in Proton Exchange Membrane Fuel Cell

被引：199

作者：

Fang, Baizeng ^{[1
]}

Kim, Jung Ho ^{[1
]}

Kim, Minsik ^{[1
]}

Yu, Jong-Sung ^{[1
]}

机构：

[1] Korea Univ, Dept Adv Mat Chem, Jochiwon 339700, Chungnam, South Korea

来源：

CHEMISTRY OF MATERIALS | 2009年 / 21卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

OXYGEN REDUCTION REACTION; ELECTROCHEMICAL HYDROGEN STORAGE; CORE/MESOPOROUS SHELL CARBON; COLLOID-IMPRINTED CARBON; MESOPOROUS CARBON; ELECTROCATALYST SUPPORT; METHANOL OXIDATION; NANOPARTICLE CATALYSTS; PLATINUM NANOPARTICLES; VAPOR-DEPOSITION;

D O I：

10.1021/cm801467y

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：

Ordered hierarchical nanostructured carbon (OHNC) has been fabricated through inverse replication of silica template and explored for the first time to support high loading of Pt nanoparticles as cathode catalyst in proton exchange membrane fuel cells (PEMFC). The superb characteristics such as ordered hierarchical nanostructure, large surface area, and mesopore volume enable the OHNC to support high loading (60 wt %) of Pt nanoparticles with uniform dispersion and small particle size. Compared to carbon black Vulcan XC-72 (VC)-supported Pt (60 wt %), the OHNC-supported one has exhibited greatly enhanced catalytic activity toward oxygen reduction reaction by ca. 53-88% and considerably improved PEMFC performance. More importantly, unlike the VC-supported Pt catalysts, the OHNC-supported Pt (40 or 60 wt %) outperforms the OHNC-supported Pt (20 wt %) even at a low catalyst loading of 0.2 mg Pt/cm(2) in the cathode, which represents a significant breakthrough in fuel cell technology because of the expectable marked reduction in fabricating cost of the supported Pt catalyst and the corresponding system weight and considerably improved fuel cell performance.

引用

页码：789 / 796

页数：8

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