Coating processes – Electrical product produced – Fuel cell part
Reexamination Certificate
2011-04-26
2011-04-26
Meeks, Timothy H (Department: 1712)
Coating processes
Electrical product produced
Fuel cell part
C427S058000, C427S331000, C427S337000, C427S372200, C427S377000, C427S383100, C429S400000, C429S479000, C429S482000, C429S483000
Reexamination Certificate
active
07931935
ABSTRACT:
This invention provides a process for producing a membrane electrode assembly which has high and stable catalytic activity, and suppressed deterioration in catalytic activity during operation, and can prevent a deterioration in performance attributable to a structural factor of the membrane electrode assembly. The process comprises the step of, after the washing/removing step, drying the catalyst electrode in an atmosphere having a lower oxygen partial pressure than the air. The anode/cathode is a covered catalyst electrode having a structure formed by supporting/depositing a catalytically active material composed mainly of platinum/ruthenium subjected to the potential holding step, the washing/removing step, and the drying step, on a porous electroconductive carrier to cover at least a part of the porous electroconductive carrier with the ion conductive material.
REFERENCES:
patent: 6136463 (2000-10-01), Kindler et al.
patent: 6962760 (2005-11-01), Rice et al.
patent: 2004/0191584 (2004-09-01), Rice et al.
patent: 2007/0254806 (2007-11-01), Mei et al.
U.S. Appl. No. 11/863,798, filed Sep. 28, 2007, Wu Mei, et al.
U.S. Appl. No. 11/863,856, filed Sep. 28, 2007, Wu Mei, et al.
A. Lewera, et al., “XPS and reactivity study of bimetallic nanoparticles containing Ru and Pt supported on a gold disk”, Electrochimica Acta, vol. 51, 2006, pp. 3950-3956.
Fukazawa Taishi
Kobayashi Tsuyoshi
Mei Wu
Mizutani Itsuko
Nakano Yoshihiko
Jiang Lisha
Kabushiki Kaisha Toshiba
Meeks Timothy H
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
LandOfFree
Process for producing membrane electrode assembly, and fuel... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for producing membrane electrode assembly, and fuel..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing membrane electrode assembly, and fuel... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2619385