Highly conductive thermoplastic composites for rapid...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C524S495000, C205S344000, C427S115000, C429S010000

Reexamination Certificate

active

07365121

ABSTRACT:
A low cost method of fabricating bipolar plates for use in fuel cells utilizes a wet lay process for combining graphite particles, thermoplastic fibers, and reinforcing fibers to produce a plurality of formable sheets. The formable sheets are then molded into a bipolar plates with features impressed therein via the molding process. The bipolar plates formed by the process have conductivity in excess of 150 S/cm and have sufficient mechanical strength to be used in fuel cells. The bipolar plates can be formed as a skin/core laminate where a second polymer material is used on the skin surface which provides for enhanced conductivity, chemical resistance, and resistance to gas permeation.

REFERENCES:
patent: 4214969 (1980-07-01), Lawrance
patent: 4339322 (1982-07-01), Balko et al.
patent: 5614312 (1997-03-01), Tucker et al.
patent: 5942347 (1999-08-01), Koncar et al.
patent: 6248467 (2001-06-01), Wilson et al.
patent: 6572997 (2003-06-01), Iqbal et al.
patent: 6752937 (2004-06-01), Butler
patent: 2003/0089890 (2003-05-01), Niu et al.
patent: 2003/0203266 (2003-10-01), Chervinko et al.
patent: 2004/0076863 (2004-04-01), Baars et al.
patent: 2006/0027792 (2006-02-01), Butcher et al.
patent: 2006/0084750 (2006-04-01), Huang et al.
Electric Resistivity/Conductivity Converter. <http://www.cactus2000.de/uk/unit/masscnd.shtml>. pp. 1-3, conversions for values 112, 150, 207 S/cm.
F. Jousse et al. “Development of New Bi-Polar Plates Based on Electrically Conductive Filled Polymers for PEMFC” EUROMAT '99, Biannu. Meet. Fed. Eur. Mater. Soc. (FEMS) (2000). 13, 181-186.
J.G. Clulow et al. “Development of Vinyl Ester/Graphite Composite Bipolar Plates” Topical Conference Proceedings, 2002 AIChE Spring National Meeting, Mar. 10-14, 2002 New Orleans, LA pp. 417-425.
D. Haack et al. “Scale up Carbon/Carbon composite bipolar plates” Topical Conference Proceedings, 2002 AIChE Spring National Meeting Meeting, Mar. 10-14, 2002 New Orleans LA pp. 454-459.
Besmann et al. “Carbon/Carbon Composite Bipolar for Proton Exchange Membrane Fuel Cells” Journal of the Electrchemical Society, pp. 4083-4086; 2000.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Highly conductive thermoplastic composites for rapid... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Highly conductive thermoplastic composites for rapid..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Highly conductive thermoplastic composites for rapid... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2766761

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.