Catalyst, membrane electrode assembly and fuel cell

Details Catalyst, membrane electrode assembly and fuel cell Catalyst, membrane electrode assembly and fuel cell

2007-04-19

2010-06-01

Mayes, Melvin C (Department: 1793)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S325000, C502S327000, C502S334000, C502S339000, C429S047000

Reexamination Certificate

active

07727930

ABSTRACT:
A catalyst includes a conductive carrier and catalyst particles. The catalyst particles are supported on the conductive carrier and have a composition represented by formula 1, below. An area of a peak derived from a metal bond of a T-element is 15% or more of an area of a peak derived from an oxygen bond of the T-element in a spectrum obtained by X-ray photoelectron spectroscopic method.in-line-formulae description="In-line Formulae" end="lead"?PtxRuyTz  (1)in-line-formulae description="In-line Formulae" end="tail"?where the T-element is at least one element selected from the group consisting of V, Nb and Hf, x is 30 to 60 at. %, y is 20 to 50 at. % and z is 5 to 50 at. %.

REFERENCES:
patent: 3506494 (1970-04-01), Adlhart
patent: 4487818 (1984-12-01), Ovshinsky et al.
patent: 5773162 (1998-06-01), Surampudi et al.
patent: 6171721 (2001-01-01), Narayanan et al.
patent: 2002/0132154 (2002-09-01), Adzic et al.
patent: 2007/0087258 (2007-04-01), Mei et al.
patent: 2004-281177 (2004-10-01), None
patent: 2005-259557 (2005-09-01), None
patent: 2005-532670 (2005-10-01), None
patent: 2005-334685 (2005-12-01), None
patent: WO 2005/088748 (2005-09-01), None
U.S. Appl. No. 12/049,770, filed Mar. 17, 2008, Yamamoto, et al.
U.S. Appl. No. 12/050,497, filed Mar. 18, 2008, Mizutani, et al.
S. R. Narayanan, et al., “IV.J.4 Advanced Catalysts for Direct Methanol Fuel Cells”, DOE Hydrogen Program FY 2004 Progress Report, 2005, pp. 610-615.
U.S. Appl. No. 12/121,282, filed May 15, 2008, Fukazawa, et al.
U.S. Appl. No. 12/201,332, filed Aug. 29, 2008, Tamura, et al.
U.S. Appl. No. 11/863,798, filed Sep. 28, 2007, Mei, et al.
U.S. Appl. No. 11/863,856, filed Sep. 28, 2007, Mei, et al.

Affiliated with

Also associated with

Rating

Catalyst, membrane electrode assembly and fuel cell does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalyst, membrane electrode assembly and fuel cell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst, membrane electrode assembly and fuel cell will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4156981