Characterization of CO tolerance of PEMFC by ac impedance spectroscopy

被引：49

作者：

Kim, JD ^{[1
]}

Park, YI ^{[1
]}

Kobayashi, K ^{[1
]}

Nagai, M ^{[1
]}

Kunimatsu, M ^{[1
]}

机构：

[1] Musashi Inst Technol, Adv Res Ctr Energy & Environm, Setagaya Ku, Tokyo 1588557, Japan

来源：

SOLID STATE IONICS | 2001年 / 140卷 / 3-4期

关键词：

Co tolerance; impedance spectroscopy; PEMFC;

D O I：

10.1016/S0167-2738(01)00842-6

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 CO tolerance of a proton exchange membrane fuel cell (PEMFC) was investigated by ac impedance spectroscopy. The impedance of the fuel cell could be obtained by feeding oxygen into the cathode side and simulated gas into anode side. Furthermore, the anode impedance could be obtained by feeding hydrogen into the cathode side and simulated gas into anode side. The CO gas had a greater effect on the charge transfer reaction thigh frequency are) and hydrogen dissociative chemisorption (medium frequency are) but little effect on the low frequency are. Although the cathode impedance is a main part at high temperature, irrespective of CO concentration (less than or equal to 100 ppm), the impedance of the full cell depends on anode impedance at low temperature and high CO concentration. It was found that CO gas has little effect on cathode impedance. (C) 2001 Published by Elsevier Science B.V.

引用

页码：313 / 325

页数：13

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