Influence of Bi modification of Pt anode catalyst in direct formic acid fuel cells

被引：113

作者：

Kang, S

Lee, J ^{[1
]}

Lee, JK

Chung, SY

Tak, Y

机构：

[1] Inha Univ, Dept Chem Engn, Inchon 402751, South Korea

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

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 14期

关键词：

D O I：

10.1021/jp056753v

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 influence of Bi modification of Pt anode catalyst on the performance of direct formic acid fuel cells was investigated. Compared with the unmodified Pt anode, the Bi modified Pt (PtBim) electrode prepared by under-potential deposition (UPD) caused faster electrocatalytic oxidation of formic acid at the same value of the overpotential, and thus, PtBi resulted in an increase in the power performance of direct formic acid fuel cells. Electrochemical impedance spectra helped to explain the difference of performance between the unmodified Pt and Bi modified Pt electrodes. Solution conductivity and dehydration phenomena occurring in highly concentrated formic acid solutions can also explain the higher power performance of PtBim.

引用

页码：7270 / 7274

页数：5

共 22 条

[1] AN IRREVERSIBLE STRUCTURE SENSITIVE ADSORPTION STEP IN BISMUTH UNDERPOTENTIAL DEPOSITION AT PLATINUM-ELECTRODES [J].