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Polymer electrolyte membrane, method for producing same, and solid polymer fuel cell

An electrolyte membrane and polymer technology, which is applied in the field of solid polymer fuel cells, can solve the problems of inability to improve the chemical durability of the membrane, high cost, and complicated preparation methods.

Pending Publication Date: 2022-03-29
TORAY ADVANCED MATERIALS RES LAB CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compounds added in these patent documents cannot improve the chemical durability of the membrane.
Moreover, many complexes need to be polymerized in advance to form polymers to be effective. The preparation method is more complicated and the cost is higher.

Method used

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  • Polymer electrolyte membrane, method for producing same, and solid polymer fuel cell
  • Polymer electrolyte membrane, method for producing same, and solid polymer fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Dissolve 10.0 g of sulfonated polyimide, 0.06 g of 4,4'-bismaleimide diphenylmethane in 42 g of N-methyl-2-pyrrolidone to form a composition, and coat the composition on PET A wet film with a thickness of 120 μm is obtained on the substrate film, and then dried at 180°C for 30 minutes to completely remove N-methyl-2-pyrrolidone to obtain a dry film, and then soak the dry film in 10% dilute sulfuric acid solution for 16 hours for acidification , after washing the acidified membrane to neutrality with deionized water, dry it at 25° C. and 50% humidity to obtain a polymer electrolyte membrane. The performance is shown in Table 1.

Embodiment 2

[0091] Dissolve 10.0 g of sulfonated polyimide, 0.20 g of 4,4'-bismaleimide diphenylmethane in 43 g of N-methyl-2-pyrrolidone to form a composition, and coat the composition on PET A wet film with a thickness of 120 μm is obtained on the substrate film, and then dried at 180°C for 30 minutes to completely remove N-methyl-2-pyrrolidone to obtain a dry film, and then soak the dry film in 10% dilute sulfuric acid solution for 16 hours for acidification , after washing the acidified membrane to neutrality with deionized water, dry it at 25° C. and 50% humidity to obtain a polymer electrolyte membrane. The performance is shown in Table 1.

Embodiment 3

[0093] Dissolve 10.0 g of sulfonated polyimide, 0.53 g of 4,4'-bismaleimide diphenylmethane in 43 g of N-methyl-2-pyrrolidone to form a composition, and coat the composition on PET A wet film with a thickness of 120 μm is obtained on the substrate film, and then dried at 180°C for 30 minutes to completely remove N-methyl-2-pyrrolidone to obtain a dry film, and then soak the dry film in 10% dilute sulfuric acid solution for 16 hours for acidification , after washing the acidified membrane to neutrality with deionized water, dry it at 25° C. and 50% humidity to obtain a polymer electrolyte membrane. The performance is shown in Table 1.

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Abstract

The invention provides a polymer electrolyte membrane which comprises an ion conducting polymer and a maleimide compound, and the maleimide groups with double bonds in the maleimide groups of the maleimide compound account for 10-80% of the mole number of all the maleimide groups. The invention relates to a polymer electrolyte membrane, a preparation method thereof and a solid polymer fuel cell containing the polymer electrolyte membrane. The polymer electrolyte membrane achieves both excellent dimensional stability and chemical durability by controlling the number of maleimide groups in which double bonds are retained in the polymer membrane.

Description

technical field [0001] The invention belongs to the field of polymer electrolyte membranes for fuel cells, in particular to a polymer electrolyte membrane containing a maleimide compound, a preparation method thereof, and a solid polymer fuel cell containing the polymer electrolyte membrane. Background technique [0002] A fuel cell is a generator that generates electricity by oxidizing a fuel, such as hydrogen or methanol, through an electrochemical reaction. In recent years, it has attracted attention as a clean energy supply source. In particular, solid polymer fuel cells have high energy density, so they are expected to be widely used in small-scale distributed power generation facilities and mobile power generation devices such as automobiles and ships. In addition, it is also attracting attention as a power supply for small mobile devices and portable devices. [0003] The structure of the fuel electrode (anode), the oxygen electrode (cathode) and the polymer electro...

Claims

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Application Information

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IPC IPC(8): H01M8/10H01M8/1051H01M8/1069H01M8/1086C08J5/22C08L79/08C08L61/16C08L87/00C08K5/3415C08K5/526
CPCH01M8/1051H01M8/1069H01M8/1086H01M8/10C08J5/2256C08J5/2287H01M2008/1095C08J2379/08C08J2361/16C08J2387/00C08K5/3415C08K5/526
Inventor 邵芳可陈桥川崎学
Owner TORAY ADVANCED MATERIALS RES LAB CHINA
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