Process modeling of the impedance characteristics of proton exchange membrane fuel cells

被引：42
|
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：
ELECTROCHIMICA ACTA | 2016年 / 191卷
关键词：
Proton exchange membrane fuel cell (PEMFC); Electrochemical impedance spectroscopy (EIS); Process modeling; Equivalent circuit; Flooding; CATHODE CATALYST LAYER; ELECTROCHEMICAL IMPEDANCE; AC-IMPEDANCE; AIR CHANNEL; SPECTROSCOPY; PERFORMANCE; ELECTRODE; DIAGNOSIS; BEHAVIOR; STACK;
D O I：
10.1016/j.electacta.2016.01.128
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A complete process modeling of the impedance characteristics of the proton exchange membrane fuel cells is presented. The impedance of the cell is determined analytically and the resultant equivalent circuit is calculated. The model predictions are then compared against the measured impedances in different current densities, operating temperatures and anode and cathode relative humidities. It is shown that the model predicts the Nyquist plots in all different operating conditions extremely well. Next, the trends observed in the Nyquist plots reported in the literature are compared against the model predictions. The result of this comparison confirms the accuracy of the model. Using the verified model, various arcs in the Nyquist plots are separated and related to the fuel cell physical parameters. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：594 / 605
页数：12
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