固体高分子電解質膜、固体高分子型燃料電池用膜電極接合体及び固体高分子電解質膜の製造方法

Japanese Patent JP4702053

B2

The present invention provides a polymer electrolyte membrane and a membrane-electrode assembly for polymer electrolyte fuel cells excellent in dimensional stability against change of the water content and mechanical strength. The present invention provides a polymer electrolyte membrane (1) characterized by comprising at least one filled layer (34) of a perforated sheet (10) having many through-holes formed substantially in parallel to the thickness direction with an average cross-sectional area of from 1×10 -3 to 20 mm 2 , wherein the numerical aperture based on the through-holes is from 30 to 80%, and an ion exchange resin is filled in the through-holes (11). Further, the present invention provides a polymer electrolyte membrane (1) characterized by comprising at least one filled layer (34) of a perforated sheet (20) in which the center portion is a region 1 (201) which is the same as the above perforated sheet (10) and the peripheral portion is a region 2 (202) which has a lower numerical aperture than the above region 1 or no through-holes, and wherein an ion exchange resin is filled in the perforated sheet (20). Such a polymer electrolyte membrane (1) is excellent in the dimensional stability against change of the water content and the mechanical strength. Accordingly, the membrane-electrode assembly (6) for polymer electrolyte fuel cells having the polymer electrolyte membrane (1) has high reliability and excellent durability.

Shinji Kinoshita

JP2005505436A

June 15, 2011

April 15, 2004

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Asahi Glass Co., Ltd.

H01M8/02; H01B1/06; H01B13/00; H01M8/10; H01M4/92

JP2000215903A	2000-08-04
JP2003100318A	2003-04-04

WO2002059996A1	2002-08-01
WO2001091213A1	2001-11-29

Sumio Tanai
Masatake Shiga
Suzuki Mitsuyoshi
Noriko Yanai

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