Polymer electrolyte fuel cell

Details Polymer electrolyte fuel cell Polymer electrolyte fuel cell

2011-07-19

2011-07-19

Ryan, Patrick (Department: 1726)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Electrode structure or composition

C429S523000

Reexamination Certificate

active

07981571

ABSTRACT:
A solid polymer electrolyte fuel cell includes a membrane electrode assembly having an anode, a cathode arranged facing the anode, and a polyelectrolyte membrane arranged between the anode and the cathode, and a pair of separator plates that are arranged facing each other so as to sandwich the membrane electrode assembly, and have an anode side gas channel for supplying a fuel gas to the anode, and a cathode side gas channel for supplying an oxidant gas to the cathode, formed thereon, wherein the catalyst layer of the anode contains at least one electrode catalyst selected from the group consisting of Pt particles and Pt alloy particles, having a particle diameter of from 6 to 10 nm, the catalyst layer of the anode has a thickness of from 1 to 5 μm, Pt volume density in the catalyst layer of the anode is from 1 to 5 g/cm3, the catalyst layer of the cathode has a thickness of 10 μm or more, and Pt volume density in the catalyst layer of the cathode is from 0.1 to 0.5 g/cm3.

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English Translation of the International Preliminary Report on Patentability issued in International Patent Application No. PCT/JP2005/012866, dated on Jan. 25, 2007.

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