Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Reexamination Certificate
2005-04-01
2009-08-25
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
C429S314000, C429S328000, C429S188000, C429S218100, C429S047000
Reexamination Certificate
active
07579116
ABSTRACT:
A fuel cell having a polymer electrolyte membrane containing fluorine atoms distributed along the polymer chains, and metal conductors and/or catalysts, is protected from fluoride ion degradation of the metal components by a fluoride ion sequestering agent fixed in the cell or flowing through the cell. In a preferred embodiment, the fluoride ion scavenger comprises a suitable number of azacrown moieties attached to polymer constituents in the electrolyte membrane or in electrodes.
REFERENCES:
patent: 4445985 (1984-05-01), Korach
patent: 4475994 (1984-10-01), Gagne et al.
patent: 2003/0232232 (2003-12-01), Hatano
patent: 2006/0046120 (2006-03-01), Merzougui et al.
patent: 11-329062 (1999-11-01), None
patent: 2001-223015 (2001-08-01), None
patent: 2002-343132 (2002-11-01), None
patent: 2004227844 (2004-08-01), None
patent: 2004-349037 (2004-12-01), None
General Motors Corporation Co-Pending U.S. Appl. No. 10/929,190, filed Aug. 30, 2004, “Constituents and Methods for Protecting Fuel Cell Components, Including PEM'S”.
General Motors Corporation, Co-Pending US Patent Application, “Metal Cations Chelators for Fuel Cells”.
Halalay Ion C.
Mance Andrew M.
Merzougui Belabbes
Chu Helen O
GM Global Technology Operations Inc.
Reising Ethington P.C.
Ryan Patrick
LandOfFree
Fluoride ion scavenger for fuel cell components does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fluoride ion scavenger for fuel cell components, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluoride ion scavenger for fuel cell components will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4126019