Hydrophilic fuel cell bipolar plate having a plasma induced...

Details Hydrophilic fuel cell bipolar plate having a plasma induced... Hydrophilic fuel cell bipolar plate having a plasma induced...

2005-06-01

2009-11-24

Alejandro, Raymond (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C427S115000

Reexamination Certificate

active

07622211

ABSTRACT:
A fuel cell electrically conductive element is provided with a polymeric surface comprising a flow field, at least a part of the flow field having a grafted, permanently hydrophilic, polymer coating. The element is made by applying a layer of a monomer mixture of a hydrophilic, ethylenically-unsaturated monomer and a crosslinking monomer to the electrically conductive element surface and polymerizing the applied monomer mixture layer with a plasma whereby the polymerized layer is grafted to the polymeric surface.

REFERENCES:
patent: 4197178 (1980-04-01), Pellegri et al.
patent: 2001093539 (2001-06-01), None
patent: WO 2004/100286 (2004-11-01), None
Official Letter issued by the German Patent Office on Jul. 4, 2008 relating to German Patent Application No. 102006025124.5 (4 pages) and the English translation of the Official Letter (4 pages).
Desai, Shrojal M. et al, “Fabrication of long-term hydrophilic elastomeric surfaces via plasma induced surface cross-linking of functional monomers,” Surface & Coatings Technology, 184 (2004) 6-12, www.sciencedirect.com.

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