scholarly journals A Review on Bio‐Inspired Proton Exchange Membrane Fuel Cell: Design and Materials

2021 ◽  
pp. 2000092
Author(s):  
Sara Pedram ◽  
Mariah Batool ◽  
Kirsten Yapp ◽  
Leonard Bonville ◽  
Jasna Jankovic
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Cell Design ◽  
Exchange Membrane

X-ray transparent proton-exchange membrane fuel cell design for in situ wide and small angle scattering tomography

2019 ◽  
Vol 437 ◽  
pp. 226906 ◽  
Author(s):  
Isaac Martens ◽  
Antonis Vamvakeros ◽  
Raphael Chattot ◽  
Maria V. Blanco ◽  
Miika Rasola ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Small Angle ◽  
Proton Exchange Membrane ◽  
Small Angle Scattering ◽  
Proton Exchange ◽  
Cell Design ◽  
X Ray ◽  
Angle Scattering ◽  
Exchange Membrane

Numerical Simulation of Two-Phase Water Behavior in the Cathode of an Interdigitated Proton Exchange Membrane Fuel Cell

2009 ◽  
Vol 7 (1) ◽  
Author(s):  
Peng Quan ◽  
Ming-Chia Lai
Keyword(s):  
Fuel Cell ◽  
Flow Field ◽  
Proton Exchange Membrane ◽  
Gas Diffusion ◽  
Proton Exchange ◽  
Cell Design ◽  
Two Phase ◽  
Water Behavior ◽  
Phase Water ◽  
Exchange Membrane

As an alternative to traditional reactant flow field design, interdigitated flow field configuration is also of interest to fuel cell design engineers and academic researchers. In this work, the two-phase flow behavior inside the cathode of an interdigitated proton exchange membrane fuel cell, including both gas flow channel and porous gas diffusion layer, is numerically studied. The effects of variable design and operational parameters, including channel surface wettability and operating pressure, on water behavior are investigated. A Darcy’s law based porous media model is used for the simulation of the two-phase transport inside the cathode gas diffusion layer, and some interesting two-phase behaviors, such as liquid water distribution under different operating condition, are observed. Compared with the water transport characteristics of a serpentine flow field, the current study shows significant difference for an interdigitated configuration, in terms of two-phase water transport. Although the interdigitated design is generally not considered viable for practical applications in fuel cell, it does provide a convenient platform for fundamental studies of multiphase transport and valuable insights in fuel cell design and optimization.

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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