Study of anode and cathode starvation effects on the impedance characteristics of proton exchange membrane fuel cells

被引：27
|
作者：
Niya, Seyed Mohammad Rezaei [1 ]
Phillips, Ryan K. [2 ]
Hoorfar, Mina [2 ]
机构：
[1] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA
[2] Univ British Columbia, Sch Engn, Kelowna, BC V1V 1V7, Canada
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2016年 / 775卷
关键词：
Proton exchange membrane fuel cell (PEMFC); Electrochemical impedance spectroscopy (EIS); Anode starvation; Cathode starvation; Flooding; STATE-OF-HEALTH; ELECTROCHEMICAL IMPEDANCE; DEGRADATION; DIAGNOSIS; STACKS; PEMFC;
D O I：
10.1016/j.jelechem.2016.06.013
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The anode and cathode starvation in proton exchange membrane fuel cells are studied using the electrochemical impedance spectroscopy. The impedances are measured while the anode and cathode feeding gasses are diluted using helium and nitrogen, respectively, and the Nyquist plots are compared against the normal operating conditions. It is shown that the cathode starvation significantly inflates the mid-frequency (MF) arc; while similar anode starvation does not affect the Nyquist plots of the measured impedances. These results are in agreement with the trends predicted from the process model presented. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：273 / 279
页数：7
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