ELECTROLYTE FILM WITH EXCELLENT ADHESION TO ELECTRODE

Title:

ELECTROLYTE FILM WITH EXCELLENT ADHESION TO ELECTRODE

Document Type and Number:

WIPO Patent Application WO/2006/064762

Kind Code:

A1

Abstract:

An electrolyte film which, even when used in a solid polymer type fuel cell over long, can retain its properties. The electrolyte film has excellent adhesion to the electrodes in a solid polymer type fuel cell. The electrolyte film for solid polymer type fuel cells comprises a polymeric base comprising an olefin polymer or fluoropolymer and chains grafted to the base and containing cation-exchange groups, and is characterized by having a penetration temperature as measured by thermomechanical analysis of 200°C or lower. It is preferable that the electrolyte film have a dimensional change of 40% or less through immersion in a 40 wt.% aqueous methanol solution and the polymeric base comprise polyvinylidene fluoride.

Inventors:

TACHIBANA TOSHIMITSU (JP)
NAGAI YOZO (JP)
NISHIYAMA SOJI (JP)

Application Number:

PCT/JP2005/022770

Publication Date:

June 22, 2006

Filing Date:

December 12, 2005

Export Citation:

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Assignee:

NITTO DENKO CORP (JP)
TACHIBANA TOSHIMITSU (JP)
NAGAI YOZO (JP)
NISHIYAMA SOJI (JP)

International Classes:

H01M8/02; C08J5/22; H01M8/10

Foreign References:

JP2002313365A	2002-10-25
JP2004259576A	2004-09-16
JP2004059752A	2004-02-26
JP2003197218A	2003-07-11
JP2004207082A	2004-07-22
JP2004227865A	2004-08-12
JP2004006306A	2004-01-08
JP2005071654A	2005-03-17
JP2005190702A	2005-07-14

Other References: