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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:
WO2013031479A12013-03-07
WO2012046870A12012-04-12
WO2011013578A12011-02-03
WO2017221840A12017-12-28
WO2018012374A12018-01-18
Foreign References:
JP2006260811A2006-09-28
JP2006107914A2006-04-20
JP3915846B22007-05-16
JP2018230348A2018-12-07
Attorney, Agent or Firm:
T.S. PARTNERS et al. (JP)
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