STUDY OF THERMAL MANAGEMENT IN PEM FUEL CELLS WITH NUMERICAL MODELING AND IN SITU DIAGNOSIS APPROACHES

2009 ◽  
Author(s):  
Liejin Guo ◽  
Guangsheng Zhang ◽  
Chengjie Xu ◽  
Lizhong Ma ◽  
Shuanglin Shen ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Fuel Cells ◽  
Thermal Management ◽  
Pem Fuel Cells

A Scaling Method for Correlating Ex Situ and In Situ Measurements in PEM Fuel Cells and Electrolyzer

2018 ◽  
Vol 165 (10) ◽  
pp. F883-F890
Author(s):  
Hyun-Seok Cho ◽  
Won-Chul Cho ◽  
J. W. Van Zee ◽  
Chang-Hee Kim
Keyword(s):  
Fuel Cells ◽  
Pem Fuel Cells ◽  
In Situ Measurements ◽  
Ex Situ ◽  
Scaling Method

Chemical Interactions in Ionomers and Ionomer Membranes Containing Metal particles and Ions

1999 ◽  
Vol 575 ◽  
Author(s):  
William M. Risen
Keyword(s):  
Fuel Cells ◽  
Metal Ions ◽  
Small Molecules ◽  
Distinct Species ◽  
Pem Fuel Cells ◽  
Metal Particles ◽  
Metal Carbonyls ◽  
Ionomer Membranes ◽  
Low Temperature Fuel Cells

ABSTRACTIonomer membranes are employed in PEM fuel cells as the proton conducting element, but they also hold potential for catalytic applications in both hydrogen based and other low temperature fuel cells. In these applications the reactions of H2, CO, 02, H20 and other small molecules with metal-based catalysts are important to consider. Reactions of these species with perfluorocarbonsulfonic acid based ionomers (PFSA), of which Nafionsa are prototypical, containing Rh, Ru, Pt and other metal ions and particles are shown. Metal carbonyls form with metal ions that have been reduced in situ to reduced valence ions or to metal particles, by the combination of CO and H2O or with H2 directly. Metal nitrogen complexes also can be formed. In addition, the interactions of dissimilar metal ions leads to distinct species with NO or CO, for example, that are different from the products with either ion separately.

In-situ methods for the determination of current distributions in PEM fuel cells

1998 ◽  
Vol 43 (24) ◽  
pp. 3773-3783 ◽  
Author(s):  
Jürgen Stumper ◽  
Stephen A. Campbell ◽  
David P. Wilkinson ◽  
Mark C. Johnson ◽  
Mike Davis
Keyword(s):  
Fuel Cells ◽  
Pem Fuel Cells ◽  
Current Distributions ◽  
In Situ Methods
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