Operation of a planar free-breathing PEMFC in a dead-end mode

被引：53

作者：

Himanen, Olli

Hottinen, Tero

Tuurala, Saara

机构：

[1] Helsinki Univ Technol, Lab Adv Energy Syst, Helsinki 02015, Finland

[2] Wartsila Corp, Fuel Cells, Espoo 02150, Finland

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 05期

基金：

芬兰科学院;

关键词：

PEMFC; free-breathing; dead-end; purge valve; pressurized; flooding;

D O I：

10.1016/j.elecom.2006.12.002

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Operation of a planar free-breathing PEMFC with pressurized anode was studied by constant current and polarization curve measurements. The anode outlet was equipped with a purge valve, whose duty cycle was varied. The results indicate that the cell is able to operate with 0.1 and 0.25 barg hydrogen pressures, with both dry and humid hydrogen. There were no significant differences in cell performance at different purge valve duty cycles. When the purge valve was completely closed signs of flooding were observed. Anode side flooding was reduced at higher hydrogen overpressure due to increased hydraulic permeation of water through the membrane. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：891 / 894

页数：4

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