Experimental Performance of an Air-Breathing PEM Fuel Cell at High Altitude Conditions

2005 ◽  
Author(s):  
Joseph Pratt ◽  
Jacob Brouwer ◽  
G. Samuelsen
Keyword(s):  
Fuel Cell ◽  
High Altitude ◽  
Pem Fuel Cell ◽  
Air Breathing ◽  
Experimental Performance

Investigation of a Symmetric Hydrogen-Purging Strategy for an Air-Breathing PEM Fuel Cell Stack Working in a Closed Environment

2021 ◽  
Vol MA2021-02 (37) ◽  
pp. 1104-1104
Author(s):  
Ariel Chiche ◽  
Göran Lindbergh ◽  
Ivan Stenius ◽  
Carina Lagergren
Keyword(s):  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Air Breathing ◽  
Fuel Cell Stack ◽  
Closed Environment

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.

Mass Transports in an Air-Breathing Cathode of a Proton Exchange Membrane Fuel Cell

2009 ◽  
Vol 6 (4) ◽  
Author(s):  
J. J. Hwang ◽  
W. R. Chang ◽  
C. H. Chao ◽  
F. B. Weng ◽  
A. Su
Keyword(s):  
Fuel Cell ◽  
Mass Transport ◽  
Proton Exchange Membrane ◽  
Pem Fuel Cell ◽  
Proton Exchange ◽  
Air Breathing ◽  
Coupled Equations ◽  
Porous Cathode ◽  
Porous Cathodes ◽  
Exchange Membrane

Mass transport in an air-breathing cathode of a proton exchange membrane (PEM) fuel cell was investigated numerically. The porous cathode in contact with a perforated current collector breathes fresh air through an array of orifices. The diffusions of reactant species in the porous cathodes are described using the Stefan–Maxwell equation. The electrochemical reaction on the surfaces of the porous cathode is modeled using the Butler–Volmer equation. Gas flow in the air-breathing porous cathodes is described using isotropic linear resistance model with constant porosity and permeability. The electron/ion transports in the catalyst/electrolyte are handled using charge conservation based on Ohm’s law. A finite-element scheme is adopted to solve these coupled equations. The effects of electrode porosity (0.4<ε<0.6) on the fluid flow, mass transport, and electrochemistry are examined. Detailed electrochemical/mass characteristics, such as flow velocities, species mass fraction, species flux, and current density distributions are presented. These details provide a solid basis for optimizing the geometry of a PEM fuel cell stack that is run in passive mode.

scholarly journals Application of Open Pore Cellular Foam for air breathing PEM fuel cell

2017 ◽  
Vol 42 (40) ◽  
pp. 25630-25638 ◽  
Author(s):  
A. Baroutaji ◽  
J.G. Carton ◽  
J. Stokes ◽  
A.G. Olabi
Keyword(s):  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Air Breathing
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