scholarly journals Effect of open circuit voltage on degradation of a short proton exchange membrane fuel cell stack with bilayer membrane configurations

2012 ◽  
Vol 205 ◽  
pp. 290-300 ◽  
Author(s):  
Shengsheng Zhang ◽  
Xiao-Zi Yuan ◽  
Renate Hiesgen ◽  
K. Andreas Friedrich ◽  
Haijiang Wang ◽  
...  
2012 ◽  
Vol 550-553 ◽  
pp. 439-442
Author(s):  
Hua Zhang ◽  
Ming Yu Huang ◽  
Hong Jun Ni

Proton exchange membrane fuel cells (PEMFCs) are considered to be a promising technology for clean and efficient power generation in the twenty-first century. Current PEMFCs are usually flat designs which needs the expensive bi-polar to transport the reactants to every fuel cell. In this paper, a novel cylindrical PEMFC has been designed and made. The structure of cathode is a spiral. The static analysis and thermal analysis of the cell shell and the spiraled cathode were carried out with FEM software. Based on the simulation, the cylindrical PEMFC has been made and tested. The simulation results show that the cylindrical PEMFC meets the requirements of the mechanical performance and electricity performance. The tested result shows that the power density of the cylindrical PEMFC can reach 10mW/cm2 when the hydrogen pressure is 0.2Mpa and the open circuit voltage is 0.8V.


Fuel Cells ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 176-184 ◽  
Author(s):  
N. Zhao ◽  
Y. Chu ◽  
Z. Xie ◽  
K. Eggen ◽  
F. Girard ◽  
...  

Author(s):  
Frano Barbir ◽  
Haluk Gorgun ◽  
Xinting Wang

Pressure drop on the cathode side of a PEM (Proton Exchange Membrane) fuel cell stack has been studied and used as a diagnostic tool. Since the Reynolds number at the beginning of the flow field channel was <250, the flow through the channel is laminar, and the relationship between the pressure drop and the flow rate is linear. Some departure from linearity was observed when water was either introduced in the stack or produced inside the stack in the electrochemical reaction. By monitoring the pressure drop in conjunction with the cell resistance in an operational fuel cell stack, it was possible to diagnose either flooding or drying conditions inside the stack.


2018 ◽  
Vol 43 (7) ◽  
pp. 2605-2614 ◽  
Author(s):  
Kailin Fu ◽  
Tian Tian ◽  
Yanan Chen ◽  
Shang Li ◽  
Chao Cai ◽  
...  

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