Investigation of dynamic driving cycle effect on the degradation of proton exchange membrane fuel cell by segmented cell technology

2014 ◽  
Vol 260 ◽  
pp. 150-158 ◽  
Author(s):  
R. Lin ◽  
F. Xiong ◽  
W.C. Tang ◽  
L. Técher ◽  
J.M. Zhang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Driving Cycle ◽  
Proton Exchange ◽  
Cell Technology ◽  
Exchange Membrane ◽  
Segmented Cell

Experiment Study on the Current Density Distribution of PEMFC by Segmented Cell Technology

2020 ◽  
Author(s):  
Tianwei Miao ◽  
Xu Xie ◽  
Chasen Tongsh ◽  
Jinqiao Liang ◽  
Yiqi Liang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Density Distribution ◽  
Current Distribution ◽  
Current Density ◽  
Proton Exchange Membrane ◽  
Current Density Distribution ◽  
Cold Start ◽  
Proton Exchange ◽  
Cell Technology ◽  
Segmented Cell

Abstract The homogeneous of current density distribution is very important for performance and lifetime of proton exchange membrane fuel cell. In this study the current density distribution of a fuel cell with an active area of 108 cm2 has been investigated by using segmented cell technology. The σc is introduced to evaluate the homogeneity of current density and the smaller value of σc represents better homogeneity of current distribution. Under normal conditions, the experimental results show that the current density decreases progressively along the flow field at low cathode stoichiometry. It is also found that the homogeneity of current distribution has a strong correlation with the membrane hydration condition and always performs best at cathode relative humidity of 80% when anode condition keeps constant. The value of σc can be significantly reduced when cathode stoichiometry increases from 1.5 to 2.5, but it changes little when cathode stoichiometry continues to increase. During the cold start process, the evolutions of current density distribution are consistent with the temperature mappings. The form of stabilized heat core in the middle regions and homogeneous current density distribution are necessary for successful cold start. The value of σc also can be used to evaluate that the cold start succeeds or not.

The Use of Proton Exchange Membrane Fuel Cell Technology to Recover Gaseous Helium from Rocket Testing Systems

2019 ◽  
Vol 41 (1) ◽  
pp. 1943-1954
Author(s):  
Michael Angelo ◽  
Mark Haberbusch ◽  
Chinh Nguyen ◽  
Keith Bethune ◽  
Richard Rocheleau
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Cell Technology ◽  
Gaseous Helium ◽  
Fuel Cell Technology ◽  
Exchange Membrane
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