Improved performance of Pd electrocatalyst supported on ultrahigh surface area hollow carbon spheres for direct alcohol fuel cells

被引：99

作者：

Hu, Feng Ping ^{[1
]}

Wang, Zhenyou ^{[1
]}

Li, Yongliang ^{[1
]}

Li, Changming ^{[2
]}

Zhang, Xin ^{[3
]}

Shen, Pei Kang ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China

[2] Nanyang Technol Univ, Sch Chem & Biiomed Engn, Singapore 637457, Singapore

[3] Shantou Univ, Dept Chem, Shantou 515063, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2008年 / 177卷 / 01期

基金：

中国国家自然科学基金;

关键词：

hollow carbon spheres; liquid fuel cells; template; ethanol oxidation; polystyrene spheres;

D O I：

10.1016/j.jpowsour.2007.11.024

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：

Ultrahigh surface area hollow carbon spheres (HCSs) with open micropores and nanochannels have been prepared by combined methods of hydrothermal and intermittent microwave heating (IMH) for the first time. It is found that the addition of poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (P123) leads to a large BET surface area of 1249.3 m(2) g(-1). The catalytic activity of Pd supported on HCS is over 3 times higher than that on Pd supported on commercial Vulcan XC-72 carbon at the same Pd loadings. It is proven that the higher catalytic activity is contributed from the formation of the high electrochemical active surface area (EASA) which is due to the hollow carbon structure with open micropores and nanochannels. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：61 / 66

页数：6

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