PtRh alloy nanoparticle electrocatalysts for oxygen reduction for use in direct methanol fuel cells

被引：73

作者：

Park, Kyung-Won

Han, Dae-Seob

Sung, Yung-Eun ^{[1
]}

机构：

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

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

[3] LG Chem Ltd, Battery Tech Ctr, Taejon 305380, South Korea

[4] Soongsil Univ, Dept Chem & Environm Engn, Seoul 156743, 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：

direct methanol fuel cell; cathode; methanol tolerance; nanoparticles; platinum rhodium alloy;

D O I：

10.1016/j.jpowsour.2006.04.073

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：

PtRh alloy nanoparticles were synthesized for use in enhancing the stability of methanol crossover and electrocatalytic activity for oxygen reduction in direct methanol fuel cells (DMFCs). From the electrochemical results, by comparing Pt in terms of methanol tolerance and oxygen reduction with Pt-based alloys, the PtRh(2:1) was an optimum catalyst for the elimination of CO poisoning during the oxidation of crossover methanol as well as oxygen reduction. A PtRh(2:1) alloy cathode showed a higher power density as well as better performance stability than Pt in DMFC unit cell test. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：82 / 86

页数：5

共 21 条

[1] Influence of Nafion loading in the catalyst layer of gas-diffusion electrodes for PEFC [J].