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Preparation method of perfluorosulfonic acid proton exchange membrane

A technology of proton exchange membrane and perfluorosulfonic acid, applied in the field of proton exchange membrane, can solve the problems of long process cycle, complex process and high cost of film formation, and achieve the effects of simple preparation process, high efficiency and low cost

Active Publication Date: 2016-11-23
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest problems in all the above-mentioned film-making processes are long process cycle, complex process, and high cost of film formation.

Method used

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  • Preparation method of perfluorosulfonic acid proton exchange membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] S1: Weigh 0.15g of perfluorosulfonic acid resin, 14ml of ethanol, and 7ml of N-methylpyrrolidinone;

[0026] S2: Add N-methylpyrrolidinone into ethanol, stir for 0.1h until uniform to prepare a mixed solvent;

[0027] S3: Add weighed perfluorosulfonic acid resin to the mixed solvent prepared in step S2, and stir for 3 hours until the particles are uniformly dispersed to obtain a stable suspension;

[0028] S4: With the graphite sheet as the negative pole piece and the conductive glass as the positive pole piece, insert the two electrode pole pieces into the suspension prepared in step S3, apply a 50V DC voltage, the electrode distance is 5mm, electrophoresis for 300s, and obtain perfluorinated Sulfonic acid proton exchange membrane.

[0029] Further, in step S4 described in this embodiment, under the same process conditions and parameters, the positive pole piece is also electrophoresed using copper, aluminum and platinum pieces respectively.

Embodiment 2

[0031] S1: Weigh 0.05g of perfluorosulfonic acid resin, 20ml of ethanol, and 5ml of N-methylpyrrolidone;

[0032] S2: Add N-methylpyrrolidinone into ethanol, stir for 0.1h until uniform to prepare a mixed solvent;

[0033] S3: Add weighed perfluorosulfonic acid resin to the mixed solvent prepared in step S2, and stir for 2.5 hours until the particles are uniformly dispersed to obtain a stable suspension;

[0034] S4: With the graphite sheet as the negative pole piece and the conductive glass as the positive pole piece, insert the two electrode pole pieces into the suspension prepared in step S3, apply a 50V DC voltage, the electrode distance is 5mm, electrophoresis for 300s, and obtain perfluorinated Sulfonic acid proton exchange membrane.

Embodiment 3

[0036] S1: Weigh 0.05g of perfluorosulfonic acid resin, 10ml of ethanol, and 5ml of N-methylpyrrolidinone;

[0037] S2: Add N-methylpyrrolidinone into ethanol, stir for 0.1h until uniform to prepare a mixed solvent;

[0038] S3: Add weighed perfluorosulfonic acid resin to the mixed solvent prepared in step S2, and stir for 2 hours until the particles are uniformly dispersed to obtain a stable suspension;

[0039] S4: With the graphite sheet as the negative pole piece and the conductive glass as the positive pole piece, insert the two electrode pole pieces into the suspension prepared in step S3, apply a 50V DC voltage, the electrode distance is 5mm, electrophoresis for 300s, and obtain perfluorinated Sulfonic acid proton exchange membrane.

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Abstract

The invention discloses a preparation method of a perfluorosulfonic acid proton exchange membrane. The preparation method comprises the following steps of: S1, weighing perfluorosulfonic acid resin, a solvent and N-methyl pyrrolidone according to a proportion of (0.025-0.5)g: (10-20)ml: (5-10)ml; S2, adding the N-methyl pyrrolidone into the solvent and carrying out stirring uniformly to prepare a mixed solvent; S3, adding the weighed perfluorosulfonic acid resin into the mixed solvent prepared in step S2, and carrying out stirring until particles are dispersed uniformly so as to prepare stable suspension liquid; and S4, inserting two electrode plates into the suspension liquid prepared in the step S3, and carrying out electrophoresis to obtain the perfluorosulfonic acid proton exchange membrane. The preparation method of the perfluorosulfonic acid proton exchange membrane is simple in preparation process, easy to operate, short in preparation time, high in efficiency, low in cost and suitable for industrial production and application.

Description

technical field [0001] The invention belongs to the technical field of proton exchange membranes, and in particular relates to a preparation method of a perfluorosulfonic acid proton exchange membrane. Background technique [0002] Proton Exchange Membrane Fuel Cell (PEMFC), as a new generation of power generation technology, has the advantages of low operating temperature, fast start-up, high specific power, simple structure, and convenient operation. preferred energy source. [0003] The proton exchange membrane (Proton Exchange Membrane, PEM) is the core component of the proton exchange membrane fuel cell, which plays a key role in the battery performance. It not only has the function of blocking, but also has the function of conducting protons. Among proton exchange membranes, perfluorosulfonic acid proton exchange membranes are widely used. [0004] At present, the molding process of perfluorosulfonic acid proton exchange membrane mainly includes: extrusion molding, ...

Claims

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Application Information

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IPC IPC(8): H01M8/1069H01M8/1023
CPCH01M8/1023H01M8/1069Y02E60/50Y02P70/50
Inventor 何伟东霍伟荣陈志林
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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