ELECTROLYTE MATERIAL, ELECTROLYTE MEMBRANE AND MEMBRANE ELECTRODE ASSEMBLY FOR SOLID POLYMER FUEL CELL

Title:

ELECTROLYTE MATERIAL, ELECTROLYTE MEMBRANE AND MEMBRANE ELECTRODE ASSEMBLY FOR SOLID POLYMER FUEL CELL

Document Type and Number:

WIPO Patent Application WO/2006/046620

Kind Code:

A1

Abstract:

Disclosed is an electrolyte material for solid polymer fuel cells which has high softening temperature and excellent durability. Also disclosed are an electrolyte membrane using such an electrolyte material and a method for producing a membrane electrode assembly. Specifically disclosed is an electrolyte material composed of a polymer containing a segment A which is composed of a polymer containing a repeating unit derived from a perfluoro monomer having an ion exchange group wherein at least one carbon atom in a polymerizable double bond is a carbon atom contained in an aliphatic ring structure, and a segment B which is composed of a fluorine-containing polymer substantially containing no ion exchange group. For example, such an electrolyte material is composed of a graft copolymer. Also disclosed is an electrolyte membrane and membrane electrode assembly using such an electrolyte material.

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Inventors:

HOMMURA SATORU (JP)
WATAKABE ATSUSHI (JP)

Application Number:

PCT/JP2005/019729

Publication Date:

May 04, 2006

Filing Date:

October 26, 2005

Export Citation:

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Assignee:

ASAHI GLASS CO LTD (JP)
HOMMURA SATORU (JP)
WATAKABE ATSUSHI (JP)

International Classes:

C08F259/08; C08F293/00; H01B1/06; H01B13/00; H01M8/02; H01M8/10

Domestic Patent References:

WO2003037885A1

2003-05-08

Foreign References:

JP2002348389A	2002-12-04
JPH05261851A	1993-10-12
JP2003082129A	2003-03-19
JP2002313364A	2002-10-25
JPH11329062A	1999-11-30

Other References: