Electrocatalytic and Lifetime Studies of Commercial Catalystsin a PEMFC

Authors

CHENG Xuan, *1), MA Yan-yun~1, QI Li~1, PENG Cheng~(2), CHEN Ling~(2), ZHAO Jun~1, ZHANG Ying~(2),FAN Qin-bai~3 ysical Chemistry of Solid Surfaces,Xiamen University, Xiamen 361005,China, 2.Department of Materials Science & Engineering, Xiamen University, Xiamen 361005, China, 3. Gas Technology Institute,Des Plaines, IL 60018, USA;

Abstract

A particularly designed H-type cell was used to simulate the operating condition of a hydrogen-air proton exchange membrane fuel cell (PEMFC). The electrocatalytic activity, morphology, structure and lifetime of commercially available catalysts, carbon support platinum (Pt/C) and unsupported platinum-ruthenium (Pt-Ru), were preliminary studied by carrying out electrochemical measurements and by SEM, XRD techniques. The catalysts were simultaneously tested in the H-cell under operation, and also separately tested in a conventional electrochemical cell for comparison. It was found that the characteristic peaks of hydrogen adsorption/desorption on cyclic voltammograms shifted considerably to a more positive direction for Pt/C, while a more negative direction for Pt-Ru. The magnitude of the peak current densities on CV curves, especially observed from Pt/C catalyst, tended to reduce after the lifetime tests. The electrocatalytic activity of Pt-Ru was significantly lower due to carbon monoxide poison, and the effect of CO on catalyst was irreversible.

Keywords

PEMFC, electrocatalytic activity, lifetime, commercial catalyst

DOI Link

https://doi.org/10.61558/2993-074X.1558

Publication Date

2004-05-28

Online Available Date

2004-05-28

Revised Date

2004-05-28

Received Date

2004-05-28

Recommended Citation

CHENG Xuan. Electrocatalytic and Lifetime Studies of Commercial Catalystsin a PEMFC[J]. Journal of Electrochemistry, 2004 , 10(2): 137-144.
DOI: 10.61558/2993-074X.1558
Available at: https://jelectrochem.xmu.edu.cn/journal/vol10/iss2/4