Effect of Relative Humidity on Membrane Durability in PEM Fuel Cells

2019 ◽  
Vol 1 (8) ◽  
pp. 263-273 ◽  
Author(s):  
Wen Liu ◽  
S. Cleghorn
Keyword(s):  
Fuel Cells ◽  
Relative Humidity ◽  
Pem Fuel Cells

Relative Humidity (RH) Effects on PEM Fuel Cells

2013 ◽  
pp. 201-223 ◽  
Author(s):  
Jianlu Zhang ◽  
Huamin Zhang ◽  
Jinfeng Wu ◽  
Jiujun Zhang
Keyword(s):  
Fuel Cells ◽  
Relative Humidity ◽  
Pem Fuel Cells

scholarly journals Effects of hydrogen relative humidity on the performance of an air-breathing PEM fuel cell

2019 ◽  
Vol 30 (4) ◽  
pp. 2077-2097 ◽  
Author(s):  
Zhenxiao Chen ◽  
Derek Ingham ◽  
Mohammed Ismail ◽  
Lin Ma ◽  
Kevin J. Hughes ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Relative Humidity ◽  
Pem Fuel Cell ◽  
Pem Fuel Cells ◽  
Air Breathing ◽  
Content Type ◽  
The Heat Transfer Coefficient

Purpose The purpose of this paper is to investigate the effects of hydrogen humidity on the performance of air-breathing proton exchange membrane (PEM) fuel cells. Design/methodology/approach An efficient mathematical model for air-breathing PEM fuel cells has been built in MATLAB. The sensitivity of the fuel cell performance to the heat transfer coefficient is investigated first. The effect of hydrogen humidity is also studied. In addition, under different hydrogen humidities, the most appropriate thickness of the gas diffusion layer (GDL) is investigated. Findings The heat transfer coefficient dictates the performance limiting mode of the air-breathing PEM fuel cell, the modelled air-breathing fuel cell is limited by the dry-out of the membrane at high current densities. The performance of the fuel cell is mainly influenced by the hydrogen humidity. Besides, an optimal cathode GDL and relatively thinner anode GDL are favoured to achieve a good performance of the fuel cell. Practical implications The current study improves the understanding of the effect of the hydrogen humidity in air-breathing fuel cells and this new model can be used to investigate different component properties in real designs. Originality/value The hydrogen relative humidity and the GDL thickness can be controlled to improve the performance of air-breathing fuel cells.

Nafion®/TiO2 Composite Membranes for PEM Fuel Cells Operating at Elevated Temperature and Reduced Relative Humidity

2019 ◽  
Vol 3 (1) ◽  
pp. 73-82 ◽  
Author(s):  
Serguei Lvov ◽  
Elena Chalkova ◽  
Gregory Rybka ◽  
Mark Fedkin ◽  
David Wesolowski ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Elevated Temperature ◽  
Relative Humidity ◽  
Composite Membranes ◽  
Pem Fuel Cells

Effect of Relative Humidity on Membrane Degradation Rate and Mechanism in PEM Fuel Cells

2019 ◽  
Vol 6 (13) ◽  
pp. 51-62 ◽  
Author(s):  
Hui Xu ◽  
Rodney Boroup ◽  
Eric Brosha ◽  
Fernando Gazon ◽  
B. S. Pivovar
Keyword(s):  
Fuel Cells ◽  
Relative Humidity ◽  
Degradation Rate ◽  
Pem Fuel Cells ◽  
Membrane Degradation

scholarly journals Accelerated durability testing via reactants relative humidity cycling on PEM fuel cells

2012 ◽  
Vol 93 ◽  
pp. 90-97 ◽  
Author(s):  
Karachakorn Panha ◽  
Michael Fowler ◽  
Xiao-Zi Yuan ◽  
Haijiang Wang
Keyword(s):  
Fuel Cells ◽  
Relative Humidity ◽  
Pem Fuel Cells ◽  
Durability Testing

PEM fuel cells operated at 0% relative humidity in the temperature range of 23–120°C

2007 ◽  
Vol 52 (15) ◽  
pp. 5095-5101 ◽  
Author(s):  
Jianlu Zhang ◽  
Yanghua Tang ◽  
Chaojie Song ◽  
Xuan Cheng ◽  
Jiujun Zhang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Relative Humidity ◽  
Pem Fuel Cells ◽  
Temperature Range

Mechanical Damage Propagation in Polymer Electrolyte Membrane Fuel Cells due to Hygrothermal Fatigue

2014 ◽  
Author(s):  
Roshanak Banan ◽  
Aimy Bazylak ◽  
Jean W. Zu
Keyword(s):  
Fuel Cells ◽  
Relative Humidity ◽  
Polymer Electrolyte Membrane ◽  
Mechanical Damage ◽  
Element Model ◽  
Membrane Electrode Assembly ◽  
Pem Fuel Cells ◽  
Membrane Electrode ◽  
Special Focus ◽  
Damage Propagation

Temperature and relative humidity cycles play an important role in the initiation and propagation of mechanical damage in the PEM fuel cell membrane electrode assembly (MEA). However, there have been few studies on the mechanical damage evolution in PEM fuel cells due to humidity and temperature variations. In this study, we investigate the damage propagation in the MEA, with a special focus on the membrane/CL interface. A finite element model based on cohesive zone theory is developed to describe the effect of relative humidity (RH) amplitude on mechanical damage propagation in the MEA. Results showed that having larger RH variation in the applied cycles can result in up to 3.4 times higher fatigue stresses at the interface, and hence a considerably faster rate for delamination propagation.

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