Water-based catalyst inks and their use for manufacture of...

Details Water-based catalyst inks and their use for manufacture of... Water-based catalyst inks and their use for manufacture of...

2005-01-18

2005-01-18

Bell, Mark L. (Department: 1755)

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

Catalyst or precursor therefor

Making catalytic electrode, process only

C502S180000, C502S182000, C502S185000, C429S006000, C429S006000, C429S047000, C429S047000, C429S047000, C429S047000, C429S047000

Reexamination Certificate

active

06844286

ABSTRACT:
The present invention relates to water-based catalyst inks and their use for manufacture of catalyst-coated substrates. According to the present invention, a catalyst layer is applied to the hydrophobic surface of a substrate by using a water-based catalyst ink comprising an electrocatalyst, an ionomer and water. The catalyst ink also comprises a highly volatile surfactant having a vapor pressure at ambient temperature in the range of 1 to 600 Pa. The use of this surfactant allows applying the water-based ink to the hydrophobic surface of a variety of substrates, such as gas diffusion layers, advanced ionomer membranes and polymer substrates. The required coating deposit can be applied in one coating pass and the resulting catalyst layer exhibits improved performance due to the absence of residual surfactant in the catalyst layer.

REFERENCES:
patent: 4229490 (1980-10-01), Frank et al.
patent: 5211984 (1993-05-01), Wilson
patent: 5861222 (1999-01-01), Fischer et al.
patent: 5869416 (1999-02-01), Mussell
patent: 6127059 (2000-10-01), Kato
patent: 20010024748 (2001-09-01), Mizuno et al.
patent: 20020034674 (2002-03-01), Starz et al.
patent: 20020058178 (2002-05-01), Narayanan et al.
patent: 20040023105 (2004-02-01), Hohenthanner et al.
patent: 20040142101 (2004-07-01), Eshraghi et al.
patent: 100 37 074 (2002-02-01), None
patent: 0 731 416 (1996-09-01), None
patent: 2004-068018 (2004-03-01), None

Affiliated with

Also associated with

Rating

Water-based catalyst inks and their use for manufacture of... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Water-based catalyst inks and their use for manufacture of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water-based catalyst inks and their use for manufacture of... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3425612