Proton exchange membrane fuel cell degradation under close to open-circuit conditions

2010 ◽  
Vol 195 (4) ◽  
pp. 1171-1176 ◽  
Author(s):  
Jinfeng Wu ◽  
Xiao-Zi Yuan ◽  
Jonathan J. Martin ◽  
Haijiang Wang ◽  
Daijun Yang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Open Circuit ◽  
Proton Exchange ◽  
Exchange Membrane

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 ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Open Circuit Voltage ◽  
Bilayer Membrane ◽  
Open Circuit ◽  
Proton Exchange ◽  
Fuel Cell Stack ◽  
Exchange Membrane

Research on the Structure of Cylindrical Proton Exchange Membrane Fuel Cell Based on ANSYS

2012 ◽  
Vol 550-553 ◽  
pp. 439-442
Author(s):  
Hua Zhang ◽  
Ming Yu Huang ◽  
Hong Jun Ni
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Open Circuit Voltage ◽  
Mechanical Performance ◽  
Open Circuit ◽  
Proton Exchange ◽  
First Century ◽  
Simulation Results ◽  
Efficient Power ◽  
Exchange Membrane

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.

Effects of Fuel Cell Operating Conditions on Proton Exchange Membrane Durability at Open‐Circuit Voltage

Fuel Cells ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 176-184 ◽  
Author(s):  
N. Zhao ◽  
Y. Chu ◽  
Z. Xie ◽  
K. Eggen ◽  
F. Girard ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Proton Exchange ◽  
Operating Conditions ◽  
Exchange Membrane

Highly proton conductive membranes based on carboxylated cellulose nanofibres and their performance in proton exchange membrane fuel cells

2019 ◽  
Author(s):  
Valentina Guccini ◽  
Annika Carlson ◽  
Shun Yu ◽  
Göran Lindbergh ◽  
Rakel Wreland Lindström ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Surface Charge ◽  
Proton Exchange Membrane ◽  
Membrane Surface ◽  
Proton Exchange ◽  
Membrane Thickness ◽  
Fuel Cell Performance ◽  
Cellulose Nanofibres ◽  
Exchange Membrane

The performance of thin carboxylated cellulose nanofiber-based (CNF) membranes as proton exchange membranes in fuel cells has been measured in-situ as a function of CNF surface charge density (600 and 1550 µmol g<sup>-1</sup>), counterion (H<sup>+</sup>or Na<sup>+</sup>), membrane thickness and fuel cell relative humidity (RH 55 to 95 %). The structural evolution of the membranes as a function of RH as measured by Small Angle X-ray scattering shows that water channels are formed only above 75 % RH. The amount of absorbed water was shown to depend on the membrane surface charge and counter ions (Na<sup>+</sup>or H<sup>+</sup>). The high affinity of CNF for water and the high aspect ratio of the nanofibers, together with a well-defined and homogenous membrane structure, ensures a proton conductivity exceeding 1 mS cm<sup>-1</sup>at 30 °C between 65 and 95 % RH. This is two orders of magnitude larger than previously reported values for cellulose materials and only one order of magnitude lower than Nafion 212. Moreover, the CNF membranes are characterized by a lower hydrogen crossover than Nafion, despite being ≈ 30 % thinner. Thanks to their environmental compatibility and promising fuel cell performance the CNF membranes should be considered for new generation proton exchange membrane fuel cells.<br>

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