Unusually active palladium-based catalysts for the electrooxidation of formic acid

被引：240

作者：

Larsen, Robert ^{[1
]}

Ha, Su ^{[1
]}

Zakzeski, Joseph ^{[1
]}

Masel, Richard I. ^{[1
]}

机构：

[1] Univ Illinois, Dept Chem Engn, Urbana, IL 61801 USA

来源：

JOURNAL OF POWER SOURCES | 2006年 / 157卷 / 01期

基金：

美国国家科学基金会;

关键词：

palladium-based catalyst; electrooxidation; formic acid;

D O I：

10.1016/j.jpowsour.2005.07.066

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：

Formic acid fuel cells offer exciting prospects for powering portable electronic and MEMS devices. Pd-based catalysts further improve the performance of direct formic acid fuel cells while reducing catalyst costs over Pt-based catalysts. This study investigates several Pd-based catalysts, both unsupported and carbon-supported, and compares the electrochemical results with results obtained in an operating fuel cell. Power densities of up to 260 mW cm(-2) were achieved in a fuel cell at 750 mA operating at 30 degrees C. Carbon-supported catalysts and addition of other metals, such as gold, show potential in further improving the performance of Pd-based catalysts. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：78 / 84

页数：7

共 11 条

[1] Formic acid oxidation on ultrathin Pd films on Au(hkl) and Pt(hkl) electrodes [J].