Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Making catalytic electrode – process only
Reexamination Certificate
2006-02-28
2006-02-28
Crepeau, Jonathan (Department: 1746)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Making catalytic electrode, process only
C429S047000, C429S047000, C427S115000
Reexamination Certificate
active
07005397
ABSTRACT:
The present invention provides an electrode for a polymer electrolyte fuel cell comprising a high-performance electrode catalyst particle which is sufficiently coated with a hydrogen ion conductive polymer electrolyte and has a water repellent material suitably supplied thereto for water management. The method of producing the electrode in accordance with the present invention comprises the steps of spraying a solution or dispersion of a hydrogen ion conductive polymer electrolyte into a dry atmosphere in which a catalyst particle comprising an electrically conductive carbon powder carrying a platinum group metal catalyst is flowing, to coat the catalyst particle with the polymer electrolyte, and then spraying a solution or dispersion of a water repellent material to the catalyst particle to attach the water repellent material to the catalyst particle.
REFERENCES:
patent: 5186877 (1993-02-01), Watanabe
patent: 5843519 (1998-12-01), Tada
patent: 6492295 (2002-12-01), Hitomi et al.
patent: 2003/0143454 (2003-07-01), Hatoh et al.
patent: 0 483 085 (1992-04-01), None
patent: 2001-259431 (2001-09-01), None
patent: WO 01/99216 (2001-12-01), None
Hori Yoshihiro
Sakai Osamu
Uchida Makoto
Yonamine Takeshi
Crepeau Jonathan
McDermott Will & Emery LLP
LandOfFree
Electrode for polymer electrolyte fuel cell and method 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 Electrode for polymer electrolyte fuel cell and method of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrode for polymer electrolyte fuel cell and method of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3701863