Durability of Graphite Composite Bipolar Plates

  • Tetsuo Mitani
  • Kenro Mitsuda


Highly graphite filled polymer composites were developed for use as bipolar plates in polymer electrolyte fuel cells (PEFCs). For use in PEFCs, composites should possess excellent durability in a hot and humid environment in addition to high electrical conductivity and good mechanical properties. Therefore, the stability of different composites in hot water was estimated by comparison with the initial properties and target values. On the basis of this comprehensive estimation, we obtained thermosetting composites for compression molding and thermoplastic composites for injection molding that enabled the production of precise bipolar plates. A PEFC stack assembly using the composite bipolar plates showed good, stable performance comparable to that of conventional machined graphite plates.


Flexural Strength Injection Molding Immersion Test Membrane Electrode Assembly Compression Molding 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Heinzel, A., Mahlendorf, F., Niemzig, O., and Kreuz, C. (2004) Injection moulded low cost bipolar plates for PEM fuel cells, J. Power Sources 131, 35–40.CrossRefGoogle Scholar
  2. Kuan, H.-C., Ma, C.-C. M., Chen, K. H., and Chen, S.-M. (2004) Preparation, electrical, mechanical and thermal properties of composite bipolar plate for a fuel cell, J. Power Sources 134, 7–17CrossRefGoogle Scholar
  3. Lee, H. S., Kim, H. J., Kim, S. D., and Ahn, S. H. (2006) Evaluation of graphite composite bipolar plate for PEM (proton exchange membrane) fuel cell: Electrical, mechanical, and molding properties. J. Mater. Process. Tech. 187–188, 425–428Google Scholar
  4. Mighri, F., Huneault, M. A., and Champagne, M. F. (2004) Electrically conductive thermoplastic blends for injection and compression molding of bipolar plates in the fuel cell application, Polym. Eng. Sci. 44, 1755–1765.CrossRefGoogle Scholar
  5. Mitani, T., Hayashi, T., and Miyamoto, F. (2003) Properties of graphite–polymer composites for PEFC separators, Fuel Cell Seminar 2003, 208–211.Google Scholar
  6. Müller, A., Kauranen, P., von Ganski, A., and Hell, B. (2006) Injection moulding of graphite composite bipolar plates, J. Power Sources 154, 467–471.CrossRefGoogle Scholar
  7. Radhakrishnan, S., Ramanujam, B. T. S., Adhikari, A., and Sivaram, S. (2006) High-temperature, polymer–graphite hybrid composites for bipolar plates: Effect of processing conditions on electrical properties, J. Power Sources 163, 702–707.CrossRefGoogle Scholar
  8. Shao, Y., Yin, G., Eang, Z, and Gao, Y. (2007) Proton exchange membrane cell from low temperature to high temperature: Material challenges, J. Power Sources 167, 235–242.CrossRefGoogle Scholar
  9. Yin, Q., Li, A.-J., Wang, W.-Q., Xia, L.-G., and Wang, Y.-M. (2007) Study on the electrical and mechanical properties of phenol formaldehyde resin/graphite composite for bipolar plate, J. Power Sources 165, 717–721.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Tetsuo Mitani
    • 1
  • Kenro Mitsuda
    • 1
  1. 1.Advanced Technology R&D CenterMitsubishi Electric CorporationAmagasakiJapan

Personalised recommendations