Solid polymer electrolyte membrane fuel cell electrode...

Details Solid polymer electrolyte membrane fuel cell electrode... Solid polymer electrolyte membrane fuel cell electrode...

2007-01-02

2007-01-02

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Having earth feature

C429S047000, C502S159000

Reexamination Certificate

active

10720279

ABSTRACT:
A solid polymer electrolyte membrane fuel cell electrode catalyst layer comprises Pt particles carried on a carbon carrier and a solid polymer electrolyte, wherein a center-to-center distance dimension (Lpt−pt) between the Pt particles carried on the carbon carrier is made to substantially coincide with the sum of a double of a total dimension resulting by adding the length (Lpes) of a side chain having an ion-exchange group to the diameter (Dpem) of a main chain of the solid polymer electrolyte and the diameter (Dpt) of the Pt particle.

REFERENCES:
patent: 2004/0121221 (2004-06-01), Suzuki et al.
patent: 2005/0112451 (2005-05-01), Lee et al.
patent: 6-275282 (1994-09-01), None

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