Impact of metallic bipolar plates on cold-start behaviors of Polymer Electrolyte Fuel Cells (PEFCs)

2012 ◽  
Vol 225 ◽  
pp. 260-267 ◽  
Author(s):  
Johan Ko ◽  
Whangi Kim ◽  
Taewhan Hong ◽  
Dongmin Kim ◽  
Hyunchul Ju
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Cold Start ◽  
Polymer Electrolyte Fuel Cells ◽  
Bipolar Plates ◽  
Metallic Bipolar Plates

Expanded Graphite/Epoxy/Aliphatic Amine Composites for Bipolar Plates Applications in Polymer Electrolyte Fuel Cells

2019 ◽  
Vol 821 ◽  
pp. 426-432 ◽  
Author(s):  
Andres F. Rigail-Cedeño ◽  
Mayken Espinoza-Andaluz ◽  
Jorge Medina-Andrade ◽  
Karol Leal-Zavala
Keyword(s):  
Electrical Conductivity ◽  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Aliphatic Amine ◽  
Synergistic Effects ◽  
Expanded Graphite ◽  
Diglycidyl Ether ◽  
Polymer Electrolyte Fuel Cells ◽  
Graphite Nanoplatelets ◽  
Bipolar Plates

Suitable conductive fillers for resins and processing conditions are critical factors for the final properties of composite bipolar plates. This research is focused on the development of expanded graphite/epoxy/aliphatic amine composite as a potential replacement for conventional bipolar plates to meet global standards of Polymer Electrolyte Fuel Cells (PEFCs). The synergistic effects on the electrical conductivity of secondary fillers Carbon Black (CB) and Graphite nanoplatelets (GNP) with Expanded Graphite (EG) were studied in a diglycidyl ether of bisphenol A (DGEBA) epoxy/polyether triamine system. Compositions of secondary filler were varied in proportions of 5, 10, 15 and 20 wt % in a fixed 40 wt % EG / Epoxy resin (w/w) to find the right secondary fillers under direct mixing without solvent. A 10 wt % CB displayed the highest electrical conductivity around 3.05 QUOTE x10-2 S/cm. For a 60 wt % EG/10 wt % CB composite, the electrical conductivity (in plane) and flexural strength were at about 19 S/cm and 22 MPa, respectively.

Effects of Clamping Pressure on Cold Start Behavior of Polymer Electrolyte Fuel Cells

Fuel Cells ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 221-230 ◽  
Author(s):  
A. M. Dafalla ◽  
L. Wei ◽  
Z. H. Liao ◽  
F. M. Jiang
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Cold Start ◽  
Polymer Electrolyte Fuel Cells ◽  
Clamping Pressure

Metallic Bipolar Plates for High Temperature Polymer Electrolyte Membrane Fuel Cells

Fuel Cells ◽  
2015 ◽  
Vol 16 (1) ◽  
pp. 39-45 ◽  
Author(s):  
P. Alnegren ◽  
J. G. Grolig ◽  
J. Ekberg ◽  
G. Göransson ◽  
J.-E. Svensson
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Bipolar Plates ◽  
Electrolyte Membrane ◽  
Metallic Bipolar Plates
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