Abstract
This chapter is dedicated to graphite-composite based bipolar plates and gaskets for fuel cells. It describes different material configurations and processing methods for bipolar plates covering the range from conventional low temperature PEM technology at 80 ¯C to high temperature PEM technology at up to 180 ¯C. The chapter discusses bipolar plate manufacturing via two different routes, the resin method and the thermoplastic method as well as technical requirements for their application in fuel cells. Material characterization covers electric conductivity testing, conductivity mapping to measure homogeneity, and thermal analysis. Additionally, manufacturing aspects and technical requirements of gaskets are discussed. Very often the influence of gaskets on performance and life time of fuel cells is underestimated. This chapter presents material candidates and characterization data for a broad variety of gaskets.
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Abbreviations
- BBP4:
-
Phenolic resin bipolar plate (Brand name of Eisenhuth)
- CNT:
-
Carbon nanotubes
- CR:
-
Chloroprene rubber
- EPDM:
-
Ethylene propylene diene monomer
- F:
-
Fluor
- FKM:
-
Fluor caoutchouc material
- H3PO4 :
-
Phosphoric acid
- HNBR:
-
Hydrogenated nitrile butadiene rubber
- LCP:
-
Liquid crystal polymer
- LSR:
-
Liquid silicon rubber
- MFI:
-
Mold flow index
- MFR:
-
Mold flow rate
- NBR:
-
Nitrile butadiene acrylonitrile rubber
- NR:
-
Natural rubber
- PPS:
-
Polyphenylene sulfide
- PSU:
-
Polysulfone
- PVDF:
-
Polyvinylidenfluoride
- SBR:
-
Styrene butadiene rubber
- TGA:
-
Thermogravimetric analysis
- VMQ:
-
Varmaq = Silicone-based solid raw material
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Acknowledgements
The authors acknowledge fruitful collaboration with, extensive test work by, and the positive relationship with TU Clausthal, Next Energy Research Institute of University of Oldenburg, ZBT (Research Center of Fuel Cell Technology) in Duisburg. Thanks are also extended to the colleagues from Elcore and Truma for their input and inspiration. Public funding is gratefully acknowledged from BMWi/Projekttraeger Juelich in the project “Rationalisierung” (#0327849), “HT-Dicht” (03ET2050A) and from the European Commission in the project CISTEM (325262).
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Kundler, I., Hickmann, T. (2016). Bipolar Plates and Gaskets: Different Materials and Processing Methods. In: Li, Q., Aili, D., Hjuler, H., Jensen, J. (eds) High Temperature Polymer Electrolyte Membrane Fuel Cells. Springer, Cham. https://doi.org/10.1007/978-3-319-17082-4_19
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DOI: https://doi.org/10.1007/978-3-319-17082-4_19
Publisher Name: Springer, Cham
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