The impinging jet flow cell - a novel method for the study of PEM fuel cell material

被引：20
|
作者：
Koponen, U
Peltonen, T
Bergelin, M
Mennola, T
Valkiainen, M
Kaskimies, J
Wasberg, M
机构：
[1] Abo Akad Univ, Inorgan Chem Lab, FIN-20500 Turku, Finland
[2] Helsinki Univ Technol, Adv Energy Syst, FIN-02015 Helsinki, Finland
来源：
JOURNAL OF POWER SOURCES | 2000年 / 86卷 / 1-2期
关键词：
impinging jet; flow cell; fuel cell catalyst; Eu-modification; CO-tolerance;
D O I：
10.1016/S0378-7753(99)00497-8
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 electrocatalytic properties of a fuel cell catalyst ink in thin film form based on Vulcan XC72/Pt (30%) and Nafion was investigated by means of a flow cell of impinging jet type in flows of H-2, and H-2 + CO dissolved in H2SO4 electrolyte. CO adlayers of different coverages were produced by a dosing procedure and their electrooxidative removal was studied. Ru was deposited onto the ink in situ by electroreduction and the basic voltammetry of such electrodes was investigated as well as the influence on CO adlayers and CO-tolerance. A Nafion film on top of the ink film influenced both the behaviour of CO adlayers and GO-tolerance. The feasibility of the flow cell for investigation and modification of ink electrodes were demonstrated. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：261 / 268
页数：8
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