LIQUID COMPOSITION, SOLID POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY, AND SOLID POLYMER FUEL CELL

Title:

LIQUID COMPOSITION, SOLID POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY, AND SOLID POLYMER FUEL CELL

Document Type and Number:

WIPO Patent Application WO/2020/116645

Kind Code:

A1

Abstract:

Provided is a liquid composition that can be used to form a solid polymer electrolyte membrane which has excellent early power generation characteristics when used in a membrane electrode assembly, and has excellent durability with few defects. This liquid composition contains a liquid medium, a sulfonate group-containing fluorocarbon polymer, and a poorly soluble cerium compound, wherein the sulfonate group-containing fluorocarbon polymer has an ion exchange capacity of 1.36-2.50 milliequivalents/g dried resin, the poorly soluble cerium compound has an average particle size of 1-3000 nm, and the proportion of the total number of moles of cerium atoms in the poorly soluble cerium compound with respect to the total number of moles of sulfonate groups possessed by the sulfonate group-containing fluorocarbon polymer is 0.001-0.3.

Inventors:

SAITO SUSUMU (JP)
OKUYAMA TAKUMI (JP)
WATABE HIROYUKI (JP)

Application Number:

PCT/JP2019/047934

Publication Date:

June 11, 2020

Filing Date:

December 06, 2019

Export Citation:

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Assignee:

AGC INC (JP)

International Classes:

C08F8/12; C08F14/18; C08K3/22; C08L27/00; H01B1/06; H01B1/12; H01M8/10; H01M8/1039; H01M8/1051

Domestic Patent References:

WO2013031479A1	2013-03-07
WO2012046870A1	2012-04-12
WO2011013578A1	2011-02-03
WO2017221840A1	2017-12-28
WO2018012374A1	2018-01-18

Foreign References:

JP2006260811A	2006-09-28
JP2006107914A	2006-04-20
JP3915846B2	2007-05-16
JP2018230348A	2018-12-07

Other References: