Optimum condition of membrane electrode assembly fabrication for PEM fuel cells

2006 ◽  
Vol 23 (4) ◽  
pp. 570-575 ◽  
Author(s):  
Banyong Nakrumpai ◽  
Kejvalee Pruksathorn ◽  
Pornpote Piumsomboon
Keyword(s):  
Fuel Cells ◽  
Optimum Condition ◽  
Membrane Electrode Assembly ◽  
Pem Fuel Cells ◽  
Membrane Electrode

scholarly journals A Mathematical Model toward Real-Time Monitoring of Automotive PEM Fuel Cells

2020 ◽  
Author(s):  
Alireza Goshtasbi ◽  
Benjamin L. Pence ◽  
Jixin Chen ◽  
Michael A. DeBolt ◽  
Chunmei Wang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Real Time ◽  
Computational Cost ◽  
Membrane Electrode Assembly ◽  
Pem Fuel Cells ◽  
Membrane Electrode ◽  
Performance Measurements ◽  
Real Time Monitoring ◽  
Model Calculations ◽  
Wide Range

A computationally efficient model toward real-time monitoring of automotive polymer electrolyte membrane (PEM) fuel cell stacks is developed. Computational efficiency is achieved by spatio-temporal decoupling of the problem, developing a new reduced-order model for water balance across the membrane electrode assembly (MEA), and defining a new variable for cathode catalyst utilization that captures the trade-off between proton and mass transport limitations without additional computational cost. Together, these considerations result in the model calculations to be carried out more than an order of magnitude faster than real time. Moreover, a new iterative scheme allows for simulation of counter-flow operation and makes the model flexible for different flow configurations. The proposed model is validated with a wide range of experimental performance measurements from two different fuel cells. Finally, simulation case studies are presented to demonstrate the prediction capabilities of the model.

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.

scholarly journals Components for PEM Fuel Cells: An Overview

2010 ◽  
Vol 657 ◽  
pp. 143-189 ◽  
Author(s):  
T. Maiyalagan ◽  
Sivakumar Pasupathi
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte Membrane ◽  
Membrane Electrode Assembly ◽  
Energy Conversion Efficiency ◽  
Direct Conversion ◽  
High Energy ◽  
Pem Fuel Cells ◽  
Pollutant Emission ◽  
Membrane Electrode ◽  
Electrolyte Membrane

Fuel cells, as devices for direct conversion of the chemical energy of a fuel into electricity by electrochemical reactions, are among the key enabling technologies for the transition to a hydrogen-based economy. Among the various types of fuel cells, polymer electrolyte membrane fuel cells (PEMFCs) are considered to be at the forefront for commercialization for portable and transportation applications because of their high energy conversion efficiency and low pollutant emission. Cost and durability of PEMFCs are the two major challenges that need to be addressed to facilitate their commercialization. The properties of the membrane electrode assembly (MEA) have a direct impact on both cost and durability of a PEMFC. An overview is presented on the key components of the PEMFC MEA. The success of the MEA and thereby PEMFC technology is believed to depend largely on two key materials: the membrane and the electro-catalyst. These two key materials are directly linked to the major challenges faced in PEMFC, namely, the performance, and cost. Concerted efforts are conducted globally for the past couple of decades to address these challenges. This chapter aims to provide the reader an overview of the major research findings to date on the key components of a PEMFC MEA.

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