An Experimental Investigation of the Effects of Operating Conditions on Anisotropic Electrical Conductivity in a PEM Fuel Cell

Fuel Cells ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 531-539
Author(s):  
M. Taş ◽  
G. Elden
Keyword(s):  
Electrical Conductivity ◽  
Experimental Investigation ◽  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Operating Conditions

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.

Theoretical Analysis on the Autothermal Reforming Process of Ethanol as Fuel for a Proton Exchange Membrane Fuel Cell System

2006 ◽  
Vol 4 (4) ◽  
pp. 468-473 ◽  
Author(s):  
Alessandra Perna
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Pem Fuel Cell ◽  
Cell System ◽  
Autothermal Reforming ◽  
Proton Exchange ◽  
Operating Conditions ◽  
Hydrogen Yield ◽  
Fuel Cell System ◽  
Exchange Membrane

The purpose of this work is to investigate, by a thermodynamic analysis, the effects of the process variables on the performance of an autothermal reforming (ATR)-based fuel processor, operating on ethanol as fuel, integrated into an overall proton exchange membrane (PEM) fuel cell system. This analysis has been carried out finding the better operating conditions to maximize hydrogen yield and to minimize CO carbon monoxide production. In order to evaluate the overall efficiency of the system, PEM fuel cell operations have been analyzed by an available parametric model.

CO Induced Reconstruction of PtxCoy Electrocatalytic Nanoparticles in a PEM Fuel Cell Anode under Transportation Operating Conditions

2019 ◽  
Vol 25 (35) ◽  
pp. 275-292 ◽  
Author(s):  
Seng Kian Cheah ◽  
Olivier Lemaire ◽  
Patrick Gélin ◽  
Alejandro A. Franco
Keyword(s):  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Operating Conditions ◽  
Cell Anode ◽  
Fuel Cell Anode

Effect of operating conditions on current density distribution and high frequency resistance in a segmented PEM fuel cell

2012 ◽  
Vol 37 (9) ◽  
pp. 7736-7744 ◽  
Author(s):  
Dietmar Gerteisen ◽  
Nada Zamel ◽  
Christian Sadeler ◽  
Florian Geiger ◽  
Victor Ludwig ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Density Distribution ◽  
Current Density ◽  
High Frequency ◽  
Current Density Distribution ◽  
Pem Fuel Cell ◽  
Operating Conditions

Effects of operating conditions on the performances of individual cell and stack of PEM fuel cell

2008 ◽  
Vol 180 (1) ◽  
pp. 476-483 ◽  
Author(s):  
Jer-Huan Jang ◽  
Han-Chieh Chiu ◽  
Wei-Mon Yan ◽  
Wei-Lian Sun
Keyword(s):  
Fuel Cell ◽  
Individual Cell ◽  
Pem Fuel Cell ◽  
Operating Conditions

Durability and Performance of Press Molded Polymer Composite Monopolar Plates

2004 ◽  
Author(s):  
Vernon Webb ◽  
Michael Hickner ◽  
Donald Baird ◽  
Scott Case ◽  
John Lesko
Keyword(s):  
Fuel Cell ◽  
Polyester Resin ◽  
Pem Fuel Cell ◽  
Operating Conditions ◽  
Short Term ◽  
Fuel Cell Performance ◽  
Aging Period ◽  
And Performance ◽  
Property Changes ◽  
Epoxy Systems

The electrical and mechanical properties of new lightweight graphite polymeric separator plates aged in a PEM fuel cell were investigated to assess their resistance to short-term durability. While the changes in electrical properties of great interest to the operation of the fuel cell, mechanical and dimensional stability over the life of the cell are critical. Thus, new polymeric based separator plates developed at Virginia Tech were aged under standard operating conditions in a PEM fuel cell over 300 hours at low pressure and 85°C. A comparison of conductivity, stiffness and strength of aged plates was made to as manufactured and unaged plates. Over the aging period, electrical conductivity did not decline even as the fuel cell performance showed some changes as evidenced by polarization curves. However, the mechanical strength of the monopolar plates was observed to declined less than 10% after 300 hours of fuel cell operation, due to the lack of stability of the polyester resin used to facilitate the rapid manufacturing of these new plates. These property changes were found to be independent of aging on the reduction and oxidation sides. Further work continues on plates formed through both fiber wet lay technology and those produced by compression molding of unique graphite filled epoxy systems, and to improve the electrochemical performance of cells fabricated using the resulting plates to levels comparable to those observed when using existing plate materials.

PEM Fuel Cell Research Direction for Automotive Application

2005 ◽  
Author(s):  
John Fagley ◽  
Jason Conley ◽  
David Masten
Keyword(s):  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Pem Fuel Cells ◽  
Proton Exchange ◽  
Operating Conditions ◽  
Department Of Energy ◽  
Limiting Current ◽  
Automotive Application ◽  
Commercial Application ◽  
Related Research

In recent years, there has been an increasing amount of PEM (proton exchange membrane) fuel cell-related research conducted and subsequently published by universities and public institutions. While a good deal of this research has been useful for understanding the underlying fundamental aspects of fuel cell components and operation, much of it is not as useful for a group working on automotive applications as it could be. The reason for this is that in order to be put to practical use in an automotive application, the system being studied must meet certain constraints; satisfying targets for projected system costs, system efficiency, volumetric and gravimetric power densities (packaging), and operating conditions. For example, numerous recent publications show studies with PEM fuel cells designed and built such that limiting current density is achieved at 0.9 A/cm2 or lower, and voltages of 600 mV can only be achieved at current densities less than 0.6 A/cm2. This type of performance is sufficiently below what is required for commercial application, that any conclusions drawn from these works are difficult to extrapolate to a system of commercial automotive interest. The purpose of this article is to show, through use of engineering calculations and cost projections, what operating conditions and performance are required in a commercial automotive fuel cell application. In addition, best known (public domain) performance and corresponding conditions are given, along with Department of Energy Freedom Car targets, which can be used for state-of-the-art benchmarking. Also, reference is made to a university publication where performance (500 mV at 1.5 A/cm2) close to automotive application targets was achieved, and important aspects of their components and flow field geometry are highlighted. It is our hope that through this publication, further PEM fuel-cell related research can be directed toward the region of greatest interest for commercial, automotive application.

Sign in / Sign up

Export Citation Format

Share Document