Metallic blocking layers integrally associated with fuel cell electrode structures and fuel cell electrode stack assemblies
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 13, 2004
Grant Date -
Apr 25, 2002
app pub date -
Apr 19, 2001
filing date -
Nov 17, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Metallic blocking layers integrally associated with fuel cell electrode structures and fuel cell electrode stack assemblies, as well as to methods relating thereto, are disclosed herein. More specifically, the present invention is directed to a metallic blocking layer integrally associated with an electrode structure of a fuel cell system such as, for example, a direct methanol fuel cell system. In this embodiment, the invention may be characterized in that the electrode structure comprises an inorganic (i.e., noncarbonaceous) support substrate having one or more discrete porous regions, wherein the one or more discrete porous regions is defined by an array of acicular pores disposed across the top surface area of the electrode structure such that at least a portion of the blocking layer covers the top surface area and protrudes into the array of acicular pores. The blocking layer is preferably a substantially voidless metallic membrane that is substantially impermeable to at least methanol and is substantially permeable to hydrogen atoms.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully