Abstract
Considering the fact that proton exchange membrane (PEM) fuel cell has different impedance performances under different discharge currents, a PEM fuel cell with single serpentine flow field was investigated with electrochemical impedance spectroscopy, and the R (QR) equivalent circuit was used to calculate the circuit element parameters. The experimental results show that water in the fuel cell increases from insufficient to sufficient and then excessive with the increasing discharge current. Accordingly, the electrochemical reaction rate on the electrodes increases first and then decreases, thus the charge transfer resistance decreases and then increases. The impedance of PEM fuel cell increases obviously for high discharge currents due to the accessional impedance produced by double-layer effect, while the impedance reaches minimum at medium discharge current (5 A).
| Original language | English |
|---|---|
| Pages (from-to) | 622-625 |
| Number of pages | 4 |
| Journal | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University |
| Volume | 42 |
| Issue number | 5 |
| State | Published - May 1 2008 |
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Keywords
- Electrochemical impedance spectroscopy
- Fuel cell
- Proton exchange membrane
ASJC Scopus subject areas
- Engineering(all)
Cite this
Analysis of impedance with different discharge current in proton exchange membrane fuel cell. / Shang, Dehua; Ma, Bin; Zhang, Guangsheng; Guo, Liejin; Liu, Hongtan.
In: Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University, Vol. 42, No. 5, 01.05.2008, p. 622-625.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Analysis of impedance with different discharge current in proton exchange membrane fuel cell
AU - Shang, Dehua
AU - Ma, Bin
AU - Zhang, Guangsheng
AU - Guo, Liejin
AU - Liu, Hongtan
PY - 2008/5/1
Y1 - 2008/5/1
N2 - Considering the fact that proton exchange membrane (PEM) fuel cell has different impedance performances under different discharge currents, a PEM fuel cell with single serpentine flow field was investigated with electrochemical impedance spectroscopy, and the R (QR) equivalent circuit was used to calculate the circuit element parameters. The experimental results show that water in the fuel cell increases from insufficient to sufficient and then excessive with the increasing discharge current. Accordingly, the electrochemical reaction rate on the electrodes increases first and then decreases, thus the charge transfer resistance decreases and then increases. The impedance of PEM fuel cell increases obviously for high discharge currents due to the accessional impedance produced by double-layer effect, while the impedance reaches minimum at medium discharge current (5 A).
AB - Considering the fact that proton exchange membrane (PEM) fuel cell has different impedance performances under different discharge currents, a PEM fuel cell with single serpentine flow field was investigated with electrochemical impedance spectroscopy, and the R (QR) equivalent circuit was used to calculate the circuit element parameters. The experimental results show that water in the fuel cell increases from insufficient to sufficient and then excessive with the increasing discharge current. Accordingly, the electrochemical reaction rate on the electrodes increases first and then decreases, thus the charge transfer resistance decreases and then increases. The impedance of PEM fuel cell increases obviously for high discharge currents due to the accessional impedance produced by double-layer effect, while the impedance reaches minimum at medium discharge current (5 A).
KW - Electrochemical impedance spectroscopy
KW - Fuel cell
KW - Proton exchange membrane
UR - http://www.scopus.com/inward/record.url?scp=44849097738&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=44849097738&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:44849097738
VL - 42
SP - 622
EP - 625
JO - Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
JF - Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
SN - 0253-987X
IS - 5
ER -