Electro-oxidation of methanol and formic acid on PtRu and PtAu for direct liquid fuel cells

被引：219

作者：

Choi, Jong-Ho

Jeong, Kyoung-Jin

Dong, Yujung

Han, Jonghee ^{[1
]}

Lim, Tae-Hoon

Lee, Jae-Suk

Sung, Yung-Eun

机构：

[1] Korea Inst Sci & Technol, Fuel Cell Res Ctr, Seoul 136791, South Korea

[2] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151744, South Korea

[3] Seoul Natl Univ, Res Ctr Energy Convers & Storage, Seoul 151744, South Korea

[4] Gwangju Inst Sci & Technol, Dept Mat Sci & Engn, Kwangju, South Korea

来源：

JOURNAL OF POWER SOURCES | 2006年 / 163卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

electrocatalyst; fuel cell; PtAu; anode; formic acid; methanol;

D O I：

10.1016/j.jpowsour.2006.02.072

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：

The use of a PtAu catalyst as an anode catalyst for the oxidation of formic acid in direct formic acid fuel cells is described. Catalytic activities of PtAu and PtRu anodes were studied using a linear sweep voltammetry technique in a single cell configuration. PtAu showed a lower on-set potential and a larger current density than that of PtRu in formic acid oxidation. In addition, the maximum power densities at 30 degrees C for PtAu and PtRu were 94 and 74 mWcm(-1), respectively. In order to evaluate long-term durability, the single cells were operated for hundreds of hours with a 6 M aqueous formic acid solution at 60 degrees C under 100 mA cm(-2). The difference in performance between PtAu and PtRu after 500 h reached ca. 90 mV in direct formic acid fuel cells. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：71 / 75

页数：5

共 28 条

[1] Oxidation of formic acid and carbon monoxide on gold electrodes studied by surface enhanced Raman spectroscopy and DFT [J].