POLYMER ELECTROLYTE MEMBRANE, BLOCK COPOLYMER, POLYMER ELECTROLYTE MATERIAL, POLYMER ELECTROLYTE MOLDED BODY, ELECTROLYTE MEMBRANE WITH CATALYST LAYER, MEMBRANE ELECTRODE COMPOSITE, SOLID POLYMER FUEL CELL, AND WATER ELECTROLYTIC HYDROGEN GENERATOR

Title:

Document Type and Number:

WIPO Patent Application WO/2022/201958

Kind Code:

A1

Abstract:

[Problem] To realize a polymer electrolyte membrane having excellent proton conductivity even in low humidity conditions and also having excellent mechanical strength and chemical stability. [Solution] Provided is a polymer electrolyte membrane comprising a block copolymer having one or more of ionic segments and non-ionic segments. The block copolymer has an ion exchange capacity (meq/g) of more than 2.0 and less than 3.1, the polymer electrolyte membrane has a co-continuous phase separation structure, the average period size (nm) of the co-continuous phase separation structure as observed by a transmission electron microscope is less than 110 nm, and the average period size (nm) and the ion exchange capacity (meq/g) of the co-continuous phase separation structure satisfy the relationship of average period size (nm) / ion exchange capacity (meq/g) ≥ 21.

Inventors:

MURAKAMI KAZUHO (JP)
MATSUI KAZUMA (JP)
TANAKA TSUYOSHI (JP)
IZUHARA DAISUKE (JP)

Application Number:

PCT/JP2022/005585

Publication Date:

September 29, 2022

Filing Date:

February 14, 2022

Export Citation:

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Assignee:

TORAY INDUSTRIES (JP)

International Classes:

C08J5/22; C08G81/00; C25B1/04; C25B9/00; C25B13/04; C25B13/08; H01B1/06; H01B1/12; H01M8/10; H01M8/1018; H01M8/1067

Domestic Patent References:

WO2013031675A1	2013-03-07
WO2013002274A1	2013-01-03
WO2008018487A1	2008-02-14
WO2013002274A1	2013-01-03
WO2013031675A1	2013-03-07

Foreign References:

JP2018110108A	2018-07-12
JP2013080701A	2013-05-02
JP2013196915A	2013-09-30
JP2006278321A	2006-10-12
JP2007109638A	2007-04-26

Other References:

ANNUAL REVIEW OF PHYSICAL CHEMISTRY, vol. 41, 1990, pages 525

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