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Title:
POLYMER ELECTROLYTE MEMBRANE
Document Type and Number:
Japanese Patent JP2008171650
Kind Code:
A
Abstract:

To provide a polymer electrolyte membrane, and its use, with protonic conductivity well secured, endowed with long-term durability, without fear of an electrode being peeled off, and with an excellent methanol shielding property without deterioration with time, in case it is used for a membrane-electrode assembly or a fuel cell.

The polymer electrolyte membrane contains at least a non-electrolyte ingredient, and a non-fluorine system electrolyte ingredient with a proton conductive group led in, with an ion exchange capacity of the 0.7 to 5.0 meq/g. Moreover, no virtual deterioration takes place in the polymer electrolyte membrane, before and after it is immersed in a 100C, 64 wt.% methanol solution for 24 hours, and that, with an area change rate before and after immersion of the polymer electrolyte membrane in a 60C, 64 wt.% methanol solution of 60% or less.


Inventors:
KODA TOMOHIRO
KUROMATSU HIDETOSHI
Application Number:
JP2007002819A
Publication Date:
July 24, 2008
Filing Date:
January 10, 2007
Export Citation:
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Assignee:
KANEKA CORP
International Classes:
H01M8/02; H01B1/06; H01M8/10



 
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