US 2006/0188768 A1 · Membrane-electrode assembly for use in solid polymer electrolyte fuel cell and solid polymer electrolyte fuel cell

Abstract

The present invention provides a membrane-electrode assembly excellent in electric power generation performance and durability for use in a solid polymer electrolyte fuel cell and a solid polymer electrolyte fuel cell formed therefrom. The membrane-electrode assembly for use in a solid polymer electrolyte fuel cell has a solid polymer electrolyte membrane 1 sandwiched between a pair of electrodes 2 and 2 each containing a catalyst. The solid polymer electrolyte membrane 1 is formed of a polyarylene polymer including a repeating unit represented by the general formula (1), or a polyarylene copolymer including the repeating unit represented by the general formula (1) and a repeating unit represented by the general formula (2). The solid polymer electrolyte fuel cell includes the membrane-electrode assembly for use in a solid polymer electrolyte fuel cell.

Claims10

Dependent claims

A membrane-electrode assembly for a solid polymer electrolyte fuel cell, comprising a solid polymer electrolyte membrane sandwiched between a pair of electrodes each containing a catalyst, wherein:

said solid polymer electrolyte membrane is formed of a polyarylene polymer comprising a repeating unit represented by the following general formula (1);
and
said electrodes each comprises catalyst particles with platinum or a platinum alloy supported thereon in a percentage loading range from 20 to 80 mass % in relation to the total mass of said catalyst, and an ion conductive binder in a mass range from 0.1 to 3.0 times the mass of said catalyst particles:
wherein X and Y each represents a divalent organic group or forms together a direct bond;
Z represents an oxygen atom or a sulfur atom;
R represents at least one atom or group selected from the group consisting of a hydrogen atom, a fluorine atom, an alkyl group and a fluorine-substituted alkyl group;
a represents an integer of 1 to 20;
n represents an integer of 1 to 5;
and p represents an integer of 0 to 10.

6 more elements

A solid polymer electrolyte fuel cell comprising a membrane-electrode assembly for a solid polymer electrolyte fuel cell, wherein:

a solid polymer electrolyte membrane formed of a polyarylene polymer comprising a repeating unit represented by the following general formula (1) is sandwiched between a pair of electrodes each comprising catalyst particles with platinum or a platinum alloy supported thereon in a percentage loading range from 20 to 80 mass % in relation to the total mass of the catalyst, and an ion conductive binder in a mass range from 0.1 to 3.0 times the mass of said catalyst particles:
wherein X and Y each represents a divalent organic group or forms together a direct bond;
Z represents an oxygen atom or a sulfur atom;
R represents at least one atom or group selected from the group consisting of a hydrogen atom, a fluorine atom, an alkyl group and a fluorine-substituted alkyl group;
a represents an integer of 1 to 20;
n represents an integer of 1 to 5;
and p represents an integer of 0 to 10.

4 more elements

Dependencies are inferred from the claim text.

Membrane-electrode assembly for use in solid polymer electrolyte fuel cell and solid polymer electrolyte fuel cell

Life of this patent

Membrane-electrode assembly for use in solid polymer electrolyte fuel cell and solid polymer electrolyte fuel cell

Life of this patent

Abstract

Claims10