scholarly journals Simulating the Effect of Gas Channel Geometry on PEM Fuel Cell Performance by Finite Element Method

2016 ◽  
Vol 22 ◽  
pp. 713-719
Author(s):  
Viorel Ionescu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Cell Performance ◽  
Channel Geometry ◽  
Fuel Cell Performance ◽  
Gas Channel ◽  
Element Method

Modeling the Effects of Gas Channel Flooding on the Voltage-Current Characteristics of PEM Fuel Cell

2010 ◽  
Author(s):  
K. H. Wong ◽  
K. H. Loo ◽  
Y. M. Lai ◽  
Siew-Chong Tan ◽  
Chi K. Tse
Keyword(s):  
Fuel Cell ◽  
Water Distribution ◽  
Pem Fuel Cell ◽  
Cell Performance ◽  
Water Flooding ◽  
Two Phase ◽  
Fuel Cell Performance ◽  
Gas Channel ◽  
Current Characteristics ◽  
Inlet Conditions

It has been reported recently that water flooding in the gas channel (GC) has significant effects on the voltage-current characteristics of a proton exchange membrane (PEM) fuel cell. However, the theoretical treatment of these effects on the fuel cell performance is still preliminary. A one-dimensional fuel cell model including the effects of two-phase flow in the GC is proposed to investigate the influences of inlet conditions on the water distribution in fuel cell and its performance by means of coupling the GC and membrane electrode assembly (MEA) modeling domains. The model predicts that the GC conditions, which are closely correlated to the inlet conditions, significantly affect the liquid water saturation level in the MEA. An increase in the inlet air pressure or humidification level leads to more severe water flooding, while an increase in the inlet air flow rate helps mitigating the water flooding. The simulated voltage-current characteristics under various inlet conditions are verified against experimental data and simulation results of a published computational fluids dynamics (CFD) model. They indicate that the relative humidity and stoichiometry of inlet air are crucial to the fuel cell performance, particularly at high current densities, due to their influences on the liquid water distribution in the fuel cell. The correlations between the inlet conditions and the fuel cell performance are addressed in the proposed model through a more accurate treatment of two-phase water transport in the cathodic MEA and GC. These are important for appropriate water management in fuel cells.

Modeling PEM Fuel Cell Performance Using the Finite-Element Method and a Fully-Coupled Implicit Solution Scheme via Newton’s Technique

2006 ◽  
Author(s):  
Ken S. Chen ◽  
Michael A. Hickner
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fuel Cell ◽  
Current Distribution ◽  
Pem Fuel Cell ◽  
Gas Diffusion ◽  
The Finite Element Method ◽  
Solution Scheme ◽  
Fully Coupled ◽  
Element Method

A numerical model that employs the finite-element method and a fully-coupled implicit solution scheme via Newton’s technique is presented for simulating the performance of polymer-electrolyte-membrane (PEM) fuel cells. With our model, solved are the multi-dimensional momentum, mass & species, and charge conservation equations that govern, respectively, pressure-gradient driven flows along the gas flow channels (GFCs) and within the gas diffusion layers (GDLs), species transport along GFCs and within GDLs, and proton and water transport within the membrane as well as the ButlerVolmer constitutive equations describing the hydrogen oxidation reaction (HOR) and oxygen reduction reaction (ORR). For simplicity, the present version of our model considers PEM fuel cell operation as isothermal and water present as vapor, and treats the anode and cathode catalyst layers as respective interfaces at which HOR and ORR take place. With our numerical approach, all governing equations are solved simultaneously and quadratic convergence is ensured due to the use of Newton’s method with an analytical Jacobian. To demonstrate the utility of our computational approach, computed predictions of velocity field, contours of hydrodynamic pressure and molar concentrations of hydrogen, oxygen and water species, and current distribution and polarization (or I-V) curves from a two-dimensional case study of a simplified PEM fuel cell are presented. To help assess the validity of our PEM fuel cell model, measurements of current distribution and polarization curves were performed using a segmented PEM fuel cell, and the resultant experimental data as well as that from the literature are compared with computed predictions.

Effect of Width of a Serpentine Flow Channel on PEM Fuel Cell Performance

2021 ◽  
Author(s):  
Srinivasa Reddy Badduri ◽  
Ramesh Siripuram ◽  
Naga Srinivasulu G ◽  
Srinivasa Rao S
Keyword(s):  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Flow Channel ◽  
Cell Performance ◽  
Fuel Cell Performance ◽  
Serpentine Flow Channel

Experimental Results of a PEM System Operated on Hydrogen and Reformate

2008 ◽  
Vol 5 (1) ◽  
Author(s):  
M. Minutillo ◽  
E. Jannelli ◽  
F. Tunzio
Keyword(s):  
Fuel Cell ◽  
Natural Gas ◽  
Large Scale ◽  
Pem Fuel Cell ◽  
Proton Exchange ◽  
Operating Conditions ◽  
Cell Performance ◽  
Pure Hydrogen ◽  
Test Bed ◽  
Fuel Cell Performance

The main objective of this study is to evaluate the performance of a proton exchange membrane (PEM) fuel cell generator operating for residential applications. The fuel cell performance has been evaluated using the test bed of the University of Cassino. The experimental activity has been focused to evaluate the performance in different operating conditions: stack temperature, feeding mode, and fuel composition. In order to use PEM fuel cell technology on a large scale, for an electric power distributed generation, it could be necessary to feed fuel cells with conventional fuel, such as natural gas, to generate hydrogen in situ because currently the infrastructure for the distribution of hydrogen is almost nonexistent. Therefore, the fuel cell performance has been evaluated both using pure hydrogen and reformate gas produced by a natural gas reforming system.

scholarly journals The Effect of Proton Conductivity of Fe–N–C–Based Cathode on PEM Fuel cell Performance

2020 ◽  
Vol 167 (8) ◽  
pp. 084501
Author(s):  
Tatyana Reshetenko ◽  
Günter Randolf ◽  
Madeleine Odgaard ◽  
Barr Zulevi ◽  
Alexey Serov ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Pem Fuel Cell ◽  
Cell Performance ◽  
Fuel Cell Performance
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