Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Means for joining components together
Reexamination Certificate
2008-12-29
2011-11-15
Gilliam, Barbara (Department: 1727)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Means for joining components together
C429S463000, C429S509000, C429S469000
Reexamination Certificate
active
08057954
ABSTRACT:
Disclosed is a membrane-electrode assembly (MEA) that prevents an electrolyte membrane from being damaged upon the fabrication of a single cell or a stack of fuel cells. The MEA further includes a guard gasket interposed between conventional gaskets, wherein the guard gasket has a thickness corresponding to 70%-95% of the thickness of the electrolyte membrane. The MEA ensures mechanical protection of the electrolyte membrane, and thus prevents the electrolyte membrane from being damaged by an excessive binding pressure upon the fabrication of a single cell or a stack of fuel cells. Furthermore, the contact resistance between the electrolyte membrane and the catalyst layer and the contact resistance between the gas diffusion layer and the catalyst layer can be minimized, thereby improving the quality of a fuel cell.
REFERENCES:
patent: 2006/0030683 (2006-02-01), Moore et al.
patent: 2010/0279197 (2010-11-01), Kim et al.
patent: 2005/302526 (2005-10-01), None
patent: 2006-185613 (2006-07-01), None
patent: 2007-035459 (2007-02-01), None
patent: 2007-048524 (2007-02-01), None
patent: 2007-095669 (2007-04-01), None
patent: 2008-103247 (2008-05-01), None
patent: 10-0590041 (2004-10-01), None
Krishnan et al., “Synthesis and characterization of sulfonated poly(ether sulfone) copolymer membranes for fuel cell applications,”Journal of Power Sources(2006) 158: 1246-1250.
Kim et al., “Sulfonated poly(ether sulfone) for universal polymer electrolyte fuel cell operations,”Journal of Power Sources(2006) 160: 353-358.
Xiao et al., “High-temperature polybenzimidazole fuel cell membranes via a sol-gel process,”Chem. Mater. (2005) 17: 5328-5333.
Cho Eun Ae
Hong Seong Ahn
Jang Jong Hyung
Kim Hyoung-Juhn
Lee Jeung Woo
Gilliam Barbara
Korea Institute of Science & Technology
Merchant & Gould P.C.
Roe Claire L
LandOfFree
Membrane-electrode assembly including guard gasket does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Membrane-electrode assembly including guard gasket, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Membrane-electrode assembly including guard gasket will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4257880