Polymer, polyarylene block copolymer, polyelectrolyte, polyelectrolyte membrane, and fuel cell

A polymer electrolyte and block copolymer technology, applied in solid electrolyte fuel cells, fuel cells, fuel cell parts, etc., can solve the problems of low heat resistance, high waste cost, low membrane strength, etc., and achieve excellent Effect of water resistance and high proton conductivity

Inactive Publication Date: 2011-06-22
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this fluorine-based polymer electrolyte has been pointed out to be very expensive, low in heat resistance, high in disposal cost, low in membrane strength and impractical without some reinforcement.
[0004] However, it has been pointed out that membranes containing hydrocarbon-based polymer electrolytes (hydrocarbon-based polymer electrolyte membranes) have lower long-term operational stability of fuel cells (hereinafter referred to as for "long-term stability") low

Method used

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  • Polymer, polyarylene block copolymer, polyelectrolyte, polyelectrolyte membrane, and fuel cell
  • Polymer, polyarylene block copolymer, polyelectrolyte, polyelectrolyte membrane, and fuel cell
  • Polymer, polyarylene block copolymer, polyelectrolyte, polyelectrolyte membrane, and fuel cell

Examples

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preparation example Construction

[0385] The monomer represented by the formula (1-h) and / or the monomer represented by the formula (1-i) and the monomer represented by the formula (B-4) used in the preparation of the zero-valent transition metal complex and the polymer etc. The method of mixing the polymers shown can be a method of adding one to the other or a method of adding both to the reaction vessel at the same time. The addition can be added at one time, but it is preferable to add in small amounts at a time in consideration of exothermicity, and it is also preferable to add in the presence of a solvent. The preferred solvents at this time are as follows.

[0386] The condensation reaction is usually carried out in the presence of a solvent. Examples of such solvents include N,N-dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), N-methylpyrrolidone (NMP), dimethyl sulfoxide ( DMSO), hexamethylphosphoric triamide and other aprotic polar solvents, toluene, xylene, mesitylene, benzene, n-butylbenzene ...

Embodiment

[0526] The present invention will be specifically described below based on examples, but the present invention is not limited thereto.

[0527]

[0528] The number average molecular weight (Mn) and the weight average molecular weight (Mw) of the polymer electrolyte were measured by gel permeation chromatography (GPC) under the following conditions, in terms of polystyrene.

[0529] (GPC conditions)

[0530] Measuring device: Prominence GPC system manufactured by Shimadzu Corporation

[0531] Column: TSKgel GMH manufactured by Tosoh Corporation HR-M

[0532] Column temperature: 40°C

[0533] Mobile phase solvent: DMF (containing 10mmol / dm 3 LiBr)

[0534] Solvent flow: 0.5mL / min

[0535] [Preparation of Polymer Electrolyte]

Synthetic example 1

[0537] First, in an argon atmosphere, 19.7 g (90.1 mmol) of anhydrous nickel bromide and 270 g of NMP were mixed in a flask, and the inner temperature was raised to 70° C., followed by stirring for 1 hour. This was cooled to 60°C, 15.5 g (99.1 mmol) of 2,2'-bipyridine was added, and stirred at this temperature for 30 minutes to prepare a nickel-containing solution.

[0538] Then, in an argon atmosphere, 2,5-dichlorobenzenesulfonic acid (2,2-dimethylpropyl) ester 18.0 g (60.6 mmol), 2,5-dichlorobenzophenone 7.4 g (29.5mmol), dissolved in 200g of NMP, prepare a solution at 50°C, add 11.8g (180.1mmol) of zinc powder to the solution, inject the above-mentioned nickel-containing solution into it, and heat up to 65°C for 5 hours Polymerization reaction to obtain a black polymerization solution.

[0539] The obtained polymerization solution was poured into 900 g of 8N nitric acid aqueous solution at room temperature, and stirred for 30 minutes. The crude polymer product of filterin...

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Abstract

Disclosed is a polyelectrolyte membrane comprising a polyelectrolyte containing an ion exchange group. The polyelectrolyte membrane satisfies a relationship represented by formula (I): Sp / Snp <= 0.42 (I) In formula (I), Sp represents the sum of areas of peaks in a spectrum obtained by the measurement of 13C-solid NMR of a polyelectrolyte membrane after subjecting the polyelectrolyte membrane to first immersion treatment in which the polyelectrolyte membrane is immersed in a 5 mmol / L aqueous iron (II) chloride tetrahydrate solution at 25 DEG C for one hour followed by drying under conditions of 25 DEG C and not more than 10 hPa for 12 hours; and Snp represents the sum of areas of peaks in a spectrum obtained by the measurement of 13C-solid NMR of a polyelectrolyte membrane after subjecting the polyelectrolyte membrane to second immersion treatment in which the polyelectrolyte membrane before the first immersion treatment is immersed in water at 25 DEG C for one hour followed by drying under conditions of 25 DEG C and not more than 10 hPa for 12 hours.

Description

technical field [0001] The present invention relates to polymers and polyarylene-based block copolymers useful as polymer electrolytes for fuel cells, polymer electrolyte membranes used in solid polymer fuel cells, and fuel cells. Background technique [0002] Polymer electrolytes containing proton-conductive polymers are used as materials constituting separators of electrochemical devices such as primary batteries, secondary batteries, and fuel cells. For example, represented by Nafion (registered trademark of Dupont Corporation), a fluorine-based polymer electrolyte whose active ingredient is a polymer having a perfluoroalkylsulfonic acid residue as a superacid in the side chain and a perfluoroalkane chain in the main chain When used as a proton-conducting membrane for fuel cells (hereinafter referred to as "proton-conducting membrane" as the case may be), it has excellent power generation characteristics, so it has been the mainstream of use. However, this fluorine-based...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/00C08G81/00H01B1/06H01M4/86H01M8/02H01M8/10
CPCH01M2300/0082H01M8/1027C08G2261/516C08G2261/312H01B1/122C08G2261/354H01M8/1032H01M2008/1095H01M8/1039C08G2261/412C08G2261/1452C08J2365/00C08G61/12C08G2261/3444C08J5/2256C08J5/22Y02E60/521Y02E60/50
Inventor 小野寺彻中村大辅金坂将八代有弘山田贵司石飞昌光佐佐木繁海藤功
Owner SUMITOMO CHEM CO LTD
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