Metal Coated Polycarbonate Bipolar Plates for Air Breathing Polymer Electrolyte Fuel Cells

2019 ◽  
Vol 41 (1) ◽  
pp. 1853-1859
Author(s):  
Yoon Ho Lee ◽  
Tae Hyun Park ◽  
Ikwhang Chang ◽  
Suk Won Cha
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cells ◽  
Bipolar Plates ◽  
Air Breathing

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.

scholarly journals Erratum to: Graphite Foil Based Assembled Bipolar Plates for Polymer Electrolyte Fuel Cells

2012 ◽  
Vol 14 (1) ◽  
pp. 169-169
Author(s):  
Sanghoon Ji ◽  
Yong-Sheen Hwang ◽  
Taehyun Park ◽  
Yoon Ho Lee ◽  
Jun Yeol Paek ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cells ◽  
Bipolar Plates ◽  
Graphite Foil

An Internal Water Management Scheme for Portable Polymer Electrolyte Fuel Cells

2006 ◽  
Author(s):  
Richard S. Fu ◽  
Ugur Pasaogullari
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
High Efficiency ◽  
Polymer Electrolyte Membrane ◽  
Polymer Electrolyte Fuel Cells ◽  
Bipolar Plates ◽  
Optimal Range ◽  
Electrolyte Membrane ◽  
Management Scheme ◽  
Computational Fluid Dynamics Cfd

Performance of polymer electrolyte fuel cells (PEFCs) is highly dependent on water content of the membrane and a humidification scheme becomes a necessity to operate PEFCs at a high efficiency. However, conventional humidification schemes require external humidifiers, which are usually bulky and impractical for portable PEFCs. In this paper we propose an innovative approach for humidification of the polymer electrolyte membrane, using an internally built-in mass (water) exchanger (MX) embedded in the bipolar plates. We present the validation of the concept using a multi-dimensional, isothermal computational fluid dynamics (CFD) solution of the water transport in the proposed MX. An optimal range of operation of the MX is investigated and effects on PEFC performance are studied.

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
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