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Fused ring-containing polymer electrolyte and use thereof

A technology of polymer electrolytes and heterocycles, applied in solid electrolytes, non-aqueous electrolytes, solid electrolyte fuel cells, etc., can solve the problems of cumbersome operation and reduced ion conductivity, and achieve high ion conductivity, excellent water resistance, high Effect of power generation characteristics

Inactive Publication Date: 2009-07-01
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the above-mentioned method is used, the operation of the high-temperature treatment is cumbersome, and the detachment of the sulfonic acid group proceeds simultaneously with the progress of the cross-linking reaction, and as a result, the ion conductivity tends to decrease.

Method used

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  • Fused ring-containing polymer electrolyte and use thereof
  • Fused ring-containing polymer electrolyte and use thereof
  • Fused ring-containing polymer electrolyte and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0203] Under argon atmosphere, add 95ml DMSO, 4.00g (13.02mmol) 3-(2,5-dichlorophenoxy) sodium propanesulfonate, 2.94g (11.72mmol) 2,5-dichlorodiphenylmethane to the flask Ketone, 0.44g (1.30mmol) of 2,7-dibromofluorenone, and 11.19g (71.63mmol) of 2,2'-bipyridine were stirred, and the temperature was raised to 70°C. Then, 17.91 g (65.12 mmol) of nickel (O) bis(cyclooctadiene) was added there, and it heated up to 80 degreeC, and stirred at the same temperature for 5.5 hours. After standing to cool, the reaction solution was poured into a large amount of 4N hydrochloric acid to precipitate the polymer, filtered, washed with water until the filtrate was neutral, washed with acetone, and dried under reduced pressure to obtain the intended polymer ( polymer electrolyte) 5.04 g (98% yield). The residual monomer after the reaction is basically not detected, and the obtained polymer is basically recovered with theoretical yield, so the 2,7-fluorenone diyl group (the structural unit ...

Embodiment 2

[0217] In a flask equipped with an azeotropic distillation device, under an argon atmosphere, add 175ml DMSO, 100ml toluene, 8.00g (26.05mmol) 3-(2,5-dichlorophenoxy) sodium propanesulfonate, 5.89g (23.44 mmol) 2,5-dichlorobenzophenone, 0.43g (1.56mmol) 1,5-dichloroanthraquinone, 21.93g (140.40mmol) 2,2'-dipyridyl, heated and stirred at 145°C, carried out Azeotropic dehydration. Then, toluene was distilled off, and it cooled to 65 degreeC. Then, 35.11 g (127.63 mmol) of nickel (O) bis(cyclooctadiene) was put there, and it stirred at the same temperature for 2 hours. After standing to cool, the obtained reaction solution was dropped into a large amount of methanol to precipitate a polymer, which was then filtered. Then, after repeating the washing and filtering operations with 6 mol / L hydrochloric acid several times, the filtrate was washed with water until the filtrate was neutral, and dried under reduced pressure to obtain 9.63 g (yield 95%) of the target polymer (polymer e...

Embodiment 3

[0223] Changed to 0.72g (2.60mmol) of 1,5-dichloroanthraquinone, 22.37g (143.26mmol) of 2,2'-bipyridine, and 35.82g (130.24mmol) of nickel (O) bis(cyclooctadiene) ), except that, the experiment was carried out in the same manner as in Example 2, and a polymer (polymer electrolyte) was obtained in the same manner. The yield was 10.20 g (yield 99%). The weight fraction of 1,5-anthraquinonediyl (structural unit represented by the general formula (1)) in the polymer was calculated from the amount of monomer charged, and it was 5.2% by weight.

[0224] From the comparison of Examples 1 and 2 and Comparative Example 1, it can be seen that the polymer electrolyte of the present invention obtains high proton conductivity and water resistance at the same time by introducing the structural unit represented by the above general formula (1), and has the input characteristics as a fuel cell and durability, it is extremely useful for applications such as fuel cells.

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Abstract

Disclosed is a polymer electrolyte containing 1-30% by weight of a structural unit represented by the following general formula (1). In the formula, ring A and ring B independently represent an optionally substituted aromatic hydrocarbon ring or an optionally substituted heterocyclic ring; X and X independently represent -CO-, -SO- or -SO2-; n and m independently represent 0, 1 or 2 with n + m being not less than 1, when n is 2, two X's may be the same as or different from each other, and when m is 2, two X's may be the same as or different from each other; and X represents a direct bond or a divalent group.

Description

technical field [0001] The present invention relates to a fused ring-containing polymer electrolyte suitable for applications requiring water resistance. More specifically, it relates to a polymer electrolyte suitable as a component of a solid polymer fuel cell. Background technique [0002] Polymer electrolytes having ion-exchange groups in their polymer chains are used in various applications such as ion-exchange membranes, ion-conducting materials, sensors, microcapsules, and water-absorbing materials. However, it is known that the polymer electrolyte absorbs water and swells or dissolves in an aqueous solvent due to the hydration of the ion-exchange group. In applications where the polymer electrolyte is used, for example, in the form of a membrane, swelling of the membrane or partial dissolution of the membrane is suppressed. The resulting deterioration (water resistance) is very important. Among them, as an ion-conducting membrane suitable for solid polymer fuel cell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/00H01B1/06H01M8/02H01M8/10
CPCC08G61/123H01B1/122H01M8/1027C08J5/2256Y02E60/521C08G61/12H01M8/1032C08J2365/00H01M2008/1095H01M2300/0082C08G61/00H01B1/12C08G61/122H01M8/1025Y02E60/50H01B1/06H01M8/02H01M8/1018H01M8/10
Inventor 山田贵司佐佐木繁
Owner SUMITOMO CHEM CO LTD