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Proton exchange membrane, preparation method and solid high-molecular fuel cell

A proton exchange membrane and molecular sieve technology, applied in the field of proton exchange membranes, can solve the problems of decreased proton conductivity, high proton conductivity, and decreased proton conductivity.

Inactive Publication Date: 2018-01-16
TORAY ADVANCED MATERIALS RES LAB CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent Document 5 uses inorganic silica particles as a crosslinking agent to crosslink directly sulfonated polyetheretherketone to improve the swelling property of directly sulfonated polyetheretherketone. However, crosslinking reduces its proton conductivity and must be Introducing other proton conductors
Patent Document 6 improves the water-swellability of sulfonated polybenzimidazole by cross-linking, but it must be doped with a heteropolyacid to obtain a higher proton conductivity
In actual use, the proton conductivity of the proton exchange membrane will decrease with the loss of heteropoly acid, and the power generation capacity will be lost

Method used

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  • Proton exchange membrane, preparation method and solid high-molecular fuel cell
  • Proton exchange membrane, preparation method and solid high-molecular fuel cell
  • Proton exchange membrane, preparation method and solid high-molecular fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] 20 g of the sulfonic acid group-containing block copolymer b1 was dissolved in 80 g of N-methyl-2-pyrrolidone (NMP) to obtain a transparent solution with a solid content of 20% by weight. The obtained transparent solution was filtered under pressure using a glass fiber filter to obtain Solution 1. Take 30 g of solution 1, which contains about 6 g of sulfonic acid group-containing block copolymer b1, add 0.9 g of MCM-41 to it, and ultrasonically disperse for 30 minutes to obtain solution 2. Solution 1 was cast-coated (liquid film thickness: 50 μm) on a PET substrate, and dried at 50° C. for 0.5 hour to form the first layer of film. Solution 2 was cast-coated (liquid film thickness: 200 μm) on the dried first film, and dried at 60° C. for 1 hour to form the second film. Continue to cast solution 1 (liquid film thickness 50 μm) on the dried second film, dry at 60° C. for 1 hour, and then dry at 100° C. for 3 hours. The finally obtained membrane with a three-layer structu...

Embodiment 2

[0127] 20 g of the sulfonic acid group-containing block copolymer b1 was dissolved in 80 g of N-methyl-2-pyrrolidone (NMP) to obtain a transparent solution with a solid content of 20% by weight. The obtained transparent solution was filtered under pressure using a glass fiber filter to obtain Solution 1. Take 30 g of solution 1, which contains about 6 g of sulfonic acid group-containing block copolymer b1, add 0.9 g of MCM-41 to it, and ultrasonically disperse for 30 minutes to obtain solution 2. Solution 1 was cast-coated (liquid film thickness: 50 μm) on a PET substrate, and dried at 100° C. for 4 hours to form the first layer of film. Solution 2 was cast-coated (liquid film thickness: 200 μm) on the dried first film, and dried at 100° C. for 4 hours to form the second film. Continuously cast solution 1 (liquid film thickness: 50 μm) on the dried second film, and dry at 100° C. for 4 hours. The finally obtained membrane with a three-layer structure is immersed in 10% by we...

Embodiment 3

[0129] Except that the type and amount of silicon-based mesoporous molecular sieves are changed to 0.9g MCM-48 to obtain solution 2, the same operation as in Example 1 is used to manufacture proton exchange membrane F3 with a three-layer structure, and the performance of F3 is as shown in table 2 .

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Abstract

The invention discloses a proton exchange membrane having a three-layer structure and a preparation method thereof, and a solid high-molecular fuel cell containing the proton exchange membrane. The proton exchange membrane is the membrane having the three-layer structure, in the three-layer structure, an interface layer is a blending layer containing a sulfonic polymer and a silicon-based meso pore molecular sieve, and two side layers are the homogeneous layers containing the sulfonic polymer. The proton exchange membrane having the three-layer structure has excellent proton conductivity underlow humidification condition, and low hot water swellability.

Description

technical field [0001] The invention relates to a proton exchange membrane with a three-layer structure, its preparation method and a solid polymer fuel cell using the proton exchange 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 are expected to be widely used in small-scale distributed power generation facilities and mobile power generation devices such as automobiles and ships due to their low operating temperature of about 100°C and high energy density. . 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 proton exchange membrane placed between the two electrodes is calle...

Claims

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Application Information

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IPC IPC(8): H01M8/10H01M8/1018H01M8/1041H01M8/1053H01M8/1069
CPCY02E60/50
Inventor 邵芳可胡元帅陈桥
Owner TORAY ADVANCED MATERIALS RES LAB CHINA
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