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Durability of Graphite Composite Bipolar Plates

  • Tetsuo Mitani
  • Kenro Mitsuda

Abstract

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.

Keywords

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.

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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

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