Impedance measurement of each cell of a 10 WPEMFC stack under load

被引:19
作者
Diard, JP [1 ]
Glandut, N [1 ]
Le Gorrec, B [1 ]
Montella, C [1 ]
机构
[1] Ecole Natl Super Electrochim & Electrome Grenoble, Lab Electrochim & Physicochim Mat & Interfaces, UMR 5631, CNRS INPG UJF, F-38402 St Martin Dheres, France
关键词
D O I
10.1149/1.1815152
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The impedance of each cell of a 10 W PEMFC stack under conditions of natural running is determined independently of the others. No electronic load is used during the experiments, even if the current flowing through the stack is greater than the current range of our electrochemical apparatus. Only a power resistor is needed, which is simpler and cheaper to use. It is shown that cell by cell, a gas starvation occurs in the stack when H-2 and O-2 circulate in cocurrent, the impedance increasing from the cell which is on the gas inlet-side to the cell which is on the gas outlet-side. It is also shown that the part of the internal resistance of a cell which is due to the polymer membrane is similar to40%. The method proposed in this paper can be applied whatever the number of cells in the stack, and could be useful in order to detect a failure due to only one cell, whereas the others run well. (C) 2004 The Electrochemical Society.
引用
收藏
页码:A2193 / A2197
页数:5
相关论文
共 14 条
[11]  
*NAE, 2002, 101 NAE
[12]   Modelistic interpretation of the impedance response of a polymer electrolyte fuel cell [J].
Paganin, VA ;
Oliveira, CLF ;
Ticianelli, EA ;
Springer, TE ;
Gonzalez, ER .
ELECTROCHIMICA ACTA, 1998, 43 (24) :3761-3766
[13]   Characterization of polymer electrolyte fuel cells using AC impedance spectroscopy [J].
Springer, TE ;
Zawodzinski, TA ;
Wilson, MS ;
Gottesfeld, S .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (02) :587-599
[14]  
WOLFRAM S, 1999, MATH BOOK