Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2003-11-17
2009-06-09
Weiner, Laura S (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S006000, C429S047000, C429S047000, C429S047000
Reexamination Certificate
active
07544433
ABSTRACT:
The present invention provides an electrode structure for polymer electrolyte fuel cells, inexpensive, and exhibiting excellent power production capacity and durability even under high temperature/low humidity conditions, and also provides a polymer electrolyte fuel cell which incorporates the same electrode structure. The present invention also provides an electrical device and transportation device, each incorporating the same polymer electrolyte fuel cell. The electrode structure comprises a pair of electrode catalyst layers1,1, each containing a catalyst supported by carbon particles, and polymer electrolyte membrane2placed between these electrode catalyst layers1,1. The polymer electrolyte membrane2is of a sulfonated polyarylene composed of 0.5 to 100% by mol of the first repeating unit represented by the general formula (1) and 0 to 99.5% by mol of the second repeating unit represented by the general formula (2):(wherein, A is a divalent organic group; and a benzene ring includes its derivative),(wherein, —W— is a divalent electron attracting group; -T- is a divalent organic group; and R1to R8are a hydrogen atom or fluorine atom, an alkyl group, fluorine-substituted alkyl group, allyl group, aryl group or cyano group, and may be the same or different).
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Iguchi Masaru
Kaji Hayato
Kanaoka Nagayuki
Mitsuta Naoki
Morikawa Hiroshi
Arent & Fox LLP
Honda Motor Co. Ltd.
Weiner Laura S
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