PERFLUOROPOLYMER, LIQUID COMPOSITION, SOLID POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE JOINT BODY, AND SOLID POLYMER FUEL CELL

Title:

PERFLUOROPOLYMER, LIQUID COMPOSITION, SOLID POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE JOINT BODY, AND SOLID POLYMER FUEL CELL

Document Type and Number:

WIPO Patent Application WO/2020/116650

Kind Code:

A1

Abstract:

Provided are a perfluoropolymer that allows production of an electrolyte membrane having excellent electrical conductivity and mechanical strength under high-temperature environment, and a liquid composition, a solid polymer electrolyte membrane, a membrane electrode joint body, and a solid polymer fuel cell obtained by using the perfluoropolymer. A perfluoropolymer according to the present invention contains a perfluoromonomer unit, contains substantially no unit having a halogen atom other than a fluorine atom, contains substantially no unit having a ring structure, and has an acid-type sulfonate group. The perfluoromonomer unit includes at least one unit A selected from the group consisting of perfluoro vinyl ether units and perfluoro allyl ether units, wherein: the ion exchange capacity is 1.4-2.5 mm equivalent/gram dry resin; and the storage elastic modulus at 120°C is greater than or equal to 60MPa.

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Inventors:

HIRAI TAKESHI (JP)
JOMUTA DAISUKE (JP)
TAMITSUJI CHIKAYA (JP)

Application Number:

PCT/JP2019/047942

Publication Date:

June 11, 2020

Filing Date:

December 06, 2019

Export Citation:

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Assignee:

AGC INC (JP)

International Classes:

C08F8/12; C08F16/30; H01B1/06; H01B1/12; H01M8/10; H01M8/1039; H01M8/1067

Domestic Patent References:

WO2007013533A1	2007-02-01
WO2019045064A1	2019-03-07
WO2018012374A1	2018-01-18
WO2017221840A1	2017-12-28
WO2017221840A1	2017-12-28

Foreign References:

JP4997968B2	2012-08-15
JP5454592B2	2014-03-26
JP2001176524A	2001-06-29
JP2018230213A	2018-12-07
JP2019036658A	2019-03-07

Other References: