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Ion-conductive material, solid polymer electrolyte membrane, and fuel battery

A technology of ion conduction and fuel cells, applied in the direction of solid electrolyte fuel cells, solid electrolytes, fuel cells, etc., can solve the problem of no improvement in the thermal or electrical properties of polyarylene, and achieve the effect of improved ion conductivity

Inactive Publication Date: 2008-10-29
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Description without any intention of improving the thermal or electrical properties of sulfonated polyarylenes

Method used

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  • Ion-conductive material, solid polymer electrolyte membrane, and fuel battery
  • Ion-conductive material, solid polymer electrolyte membrane, and fuel battery

Examples

Experimental program
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Embodiment 1

[0036] Samples were fabricated according to the above process such that the weight ratio of Nafion to added polymer was 95:5. The Tg of the added polymer and the proton conductivity of the hybrid material as figure 1 shown. exist figure 1 Among them, polyethylene glycol (PEG: number average molecular weight of 380-420, Tg = -9°C, manufactured by Merck) is represented by B1, polyethylene glycol (PEG: number average molecular weight of 950-1050, Tg = 40°C , manufactured by Merck) is represented by B2, polyvinyl alcohol (PVA: number average molecular weight of 450-550, Tg=200°C, manufactured by Merck) is represented by B3, polyarylamide (number average molecular weight of about 1500, Tg= 150°C, manufactured by Aldrich) is represented by B4, and polyacrylic acid (Tg=106°C) is represented by B5.

Embodiment 2

[0038] Samples were fabricated according to the process described above so that the weight ratio of Nafion to added polymer was 80:20. The Tg of the added polymer and the proton conductivity of the hybrid material as figure 2 shown. and figure 1 Similarly, polyethylene glycol (PEG: number average molecular weight of 380-420, Tg = -9°C, manufactured by Merck) is represented by B1, polyethylene glycol (PEG: number average molecular weight of 950-1050, Tg = 40°C , manufactured by Merck) is represented by B2, polyvinyl alcohol (PVA: number average molecular weight of 450-550, Tg=200°C, manufactured by Merck) is represented by B3, polyarylamide (number average molecular weight of about 1500, Tg= 150°C, manufactured by Aldrich) is represented by B4, and polyacrylic acid (Tg=106°C) is represented by B5.

[0039] From figure 1 and 2 From the results, it can be seen that there is a strong correlation between the Tg of the added polymer and the proton conductivity of the hybrid ma...

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Abstract

This invention provides an ion-conductive material characterized by comprising an ion-conductive main component polymer and a polymer, with a lower glass transition temperature (Tg) than the main component polymer, added to the main component polymer, and a solid polymer fuel battery using the ion-conductive material. The above constitution can improve the ion conductivity of a solid polymer electrolyte from the viewpoint of molecular motion.

Description

technical field [0001] The present invention relates to an ion-conducting material having improved ion conductivity, a method for producing the same, a solid polymer electrolyte membrane thereof, and a fuel cell using the same. Background technique [0002] A solid polymer electrolyte is a solid polymer material with electrolyte groups, such as sulfonic acid groups on the polymer chain, that can strongly bond to specific ions and selectively allow the penetration of cations or anions. Because of this characteristic of solid polymer electrolytes, they form particles, fibers or membranes and are used in various applications such as electrodialysis, diffusion dialysis and battery separators. [0003] For example, a fuel cell converts the chemical energy of the fuel directly into electrical energy and extracts it by electrochemical oxidation of the fuel, such as hydrogen or methanol, within the cell. In recent years, fuel cells have attracted attention as a clean source of elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/12C08L101/14H01B1/06H01M8/02H01M8/10
CPCC08L101/12H01M8/1081Y02E60/521H01M2300/0082H01M8/1039C08L27/18H01M8/1023H01B1/122H01M8/1041C08L71/02Y02E60/50Y02P70/50C08L2666/22C08L2666/14
Inventor 辻子曜
Owner TOYOTA JIDOSHA KK
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