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Proton conductive membrane and its producing process

A technology for proton conducting membranes and manufacturing methods, applied in the field of proton conducting membranes, capable of solving problems such as decreased ion conductivity

Inactive Publication Date: 2009-11-04
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the ion conductivity is greatly reduced due to the drying of water under low humidity conditions, or the freezing of water under low temperature conditions, etc.

Method used

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  • Proton conductive membrane and its producing process
  • Proton conductive membrane and its producing process
  • Proton conductive membrane and its producing process

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0209] (modulation of oligomers)

[0210] Add 67.3g (0.20 moles) of 2,2-bis(4-hydrobenzene)-1,1 to a 1L three-necked conical flask equipped with a stirrer, a thermometer, a cooling pipe, a Dean-Stark pipe, and a three-way valve for introducing nitrogen, 1,3,3,3-hexafluoropropane, 60.3g (0.24 mol) of 4,4'-dichlorobenzophenone (4,4'-DCBP), 71.9g (0.52 mol) of potassium carbonate, 300mL of N , N-dimethylacetamide (DMAc), and 150 mL of toluene were heated and stirred in an oil bath under a nitrogen atmosphere, and the reaction was carried out at 130° C. When the water and toluene produced by the reaction were azeotropically removed from the reaction system through the Dean-Stark tube to perform the reaction, it was confirmed that almost no water was produced after about 3 hours. The reaction temperature was slowly increased from 130 to 150°C. Then, in the process of slowly increasing the reaction temperature to 150°C, remove most of the toluene, continue the reaction at 150°C fo...

Synthetic example 2

[0216] Modulation of Polyarene Polymer Using Neopentyl as Protecting Group

[0217] Add 39.58g (98.64mmol) of 3-(2,5-Di Neopentyl benzenesulfonate, and 15.23 g (1.36 mmol) of the BCPAF oligomer (Mn=11200) prepared in Synthesis Example 1, 1.67 g (2.55 mmol) of Ni(PPh 3 ) 2 Cl 2 , 10.49g (40 mmol) of PPh 3 , 0.45 g (3 mmol) of NaI, 15.69 g (240 mmol) of zinc powder, 390 mL of dry NMP. Under the condition of stirring the reaction system, it was heated (finally heated to 75° C.) for 3 hours. Dilute the polymerization reaction liquid with 250 mL of THF, stir for 30 minutes, use celite as a filter aid, filter, and pour the filtered liquid into excess 1500 mL of methanol to make it solidify. The coagulum was collected by filtration, air-dried and redissolved in THF / NMP (200 / 300mL, respectively), and coagulated and precipitated with an excess of 1500mL methanol. After air-drying, 47.0 g (recovery rate: 99%) of the desired yellow fibrous, neopentyl-protected, sulfone derivative c...

Synthetic example 3

[0224] (1) Synthesis of oligomers

[0225] Add 48.8g (284mmol) of 2,6-dichlorotoluonitrile and 89.5g (266mmol) of 2 to a 1L three-necked conical flask equipped with a stirrer, a thermometer, a cooling tube, a Dean-Stark tube, and a nitrogen introduction tube. 2-bis(4-hydrophenyl)-1,1,1,3,3,3-hexafluoropropane, 47.8 g (346 mmol) of calcium carbonate. After nitrogen replacement, 346 mL of sulfolane and 173 mL of toluene were added and stirred. The reaction solution was heated and circulated at 150° C. in an oil bath. The water produced by the reaction was collected with a Dean-Stark tube. When it was confirmed that almost no water was produced after 3 hours, toluene was removed from the reaction system through a Dean-Stark tube. The reaction temperature was gradually increased to 200° C., and after stirring was continued for 3 hours, 9.2 g (53 mmol) of 2,6-dichlorotoluonitrile was added, and the reaction was continued for 5 hours.

[0226] After the reaction solution was lef...

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Abstract

A proton conductive membrane displays sufficient proton conductivity even at low humidities and low temperatures. The proton conductive membrane includes: a block copolymer including an ion conductive polymer segment (A) and an ion nonconductive polymer segment (B), the segment (A) and the segment (B) being covalently bound in a manner such that main chain skeletons of the segments are covalently bound at aromatic rings thereof through binding groups, (i) the membrane having a morphology including a microphase separated structure, (ii) the ion conductive polymer segment (A) forming a continuous phase.

Description

technical field [0001] The present invention relates to a proton conducting membrane suitable for use as an electrolyte of a solid polymer fuel cell. especially related to the use of H 2 A proton conducting membrane used as an electrolyte in a fuel cell for automobiles equipped with fuel and a method for producing the same. Background technique [0002] A fuel cell basically consists of two catalyst electrodes and a solid electrolyte membrane sandwiched between the electrodes. Hydrogen as fuel is electrolyzed by one electrode, and the hydrogen ions diffuse through the solid electrolyte membrane and combine with oxygen at the other electrode. At this time, if the two electrodes are connected in an external circuit, a current is generated to supply power to the external circuit. Here, the solid electrolyte membrane plays a role of physically separating hydrogen and oxygen in the fuel gas and blocking the flow of electrons while diffusing hydrogen ions. [0003] The solid e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/22C08G61/00H01B1/06H01B13/00H01M8/02H01M8/10C08L101/00C08G61/12H01B1/12H01M8/00
CPCC08J5/2256H01M8/1027H01M8/1081H01M8/103H01M8/1072Y02E60/523H01M8/1039C08G61/00H01M8/1032H01B1/122C08J2365/02H01M8/1025Y02P70/50Y02E60/50C08J5/22C08G61/12H01M8/10
Inventor 川井淳司今野洋助后藤幸平
Owner JSR CORPORATIOON
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