Conductive composition for solid polymer type fuel cell separator, solid polymer type fuel cell separator, solid polymer type fuel cell and solid polymer type fuel cell system using the separator
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United States of America Patent
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May 23, 2006
Grant Date -
Sep 25, 2003
app pub date -
Jun 29, 2001
filing date -
Jun 29, 2000
priority date (Note) -
Expired
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Abstract
1. A conductive composition for a polymer electrolyte fuel cell separator comprising: 1) a conductive component composed of graphite particles and optionally fine graphite particles; and 2) a thermoplastic resin and/or a thermosetting resin, 3) the graphite particles having an average particle diameter D1 of 55 to 65 .mu.m, 4) the melt viscosity being 1.times.10.sup.2 to 5.times.10.sup.3 Pas at 320.degree. C., and 5) the weight ratio of (the graphite particles and optionally the fine graphite particles)/(the thermoplastic resin and/or the thermosetting resin) being 95/5 to 75/25.
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