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Organic/inorganic mixed proton exchange membrane

A proton exchange membrane, inorganic technology, used in fuel cell parts, fuel cells, electrical components, etc., can solve the problems of catalyst layer peeling, impedance rise, performance degradation of passive direct methanol fuel cells, etc., to achieve excellent mechanical strength, Good water retention effect

Active Publication Date: 2014-03-19
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, since the passive direct methanol fuel cell is fed with high-concentration methanol vapor, and the water system is another anode fuel of the direct methanol fuel cell, it will face the dilemma of no water participating in the reaction, that is, the problem of increased ion conduction impedance, which will The performance of passive direct methanol fuel cells is greatly attenuated; while low-humidification hydrogen fuel cells use fuel with extremely low relative humidity to feed, and they also face the problem of proton conduction resistance and the shrinkage of ion exchange membranes under dry and wet environments. layer peeling problem

Method used

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  • Organic/inorganic mixed proton exchange membrane
  • Organic/inorganic mixed proton exchange membrane
  • Organic/inorganic mixed proton exchange membrane

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] 20wt% (relative to the overall solid content) of non-modified porous carbon (activated carbon) is dispersed in the solution of perfluorosulfonic acid resin Nafion (NAF, DE2020CS commodity manufactured by DuPont Company) to form a slurry (ink), Stir evenly, and after aging for 12 hours, the prepared slurry is coated on glass and the solvent is evaporated. Immerse in 1N H at 80°C 2 SO 4 In (aq), the proton substitution reaction is carried out for 1 hour or several hours. Next, immerse in excess pure water at 80°C for 1 hour or several hours to fully clean and obtain a black soft film. Afterwards, the properties of the film were measured. The results of flexibility and glass transition temperature measurement are shown in Table 1, and the dimensional change with temperature is as follows figure 1 As shown, the results of water retention and swelling are shown in Table 2 and figure 2 and image 3 Shown in Table 3 are the results of conductivity measurements at variou...

example 2 to example 4

[0031] Membranes were formed in the same manner as in Example 1, except that the content of unmodified porous carbon (activated carbon) was changed to 10 wt%, 5 wt% and 2.5 wt%, respectively.

example 5、 example 6

[0033] Membrane was prepared in the same way as Example 1, but the non-modified porous carbon was changed to ECP 600 (carbon black, NSA (Net Surface area): 1200m 2 / g) and CL-08 (carbon black, NSA: 210m 2 / g, manufactured by China Synthetic Rubber Company) its content is 5wt%.

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Abstract

The invention discloses an organic / inorganic mixed proton exchange membrane which comprises the following components by weight percentage: 0.5 to 30 percent of inorganic material and 99.5 to 70 percent of organic material. The surface area of the inorganic material is 50 to 3000 square meters per gram. The organic material comprises a copolymerized high polymer containing a sulfoacid base or a polymer doped with phosphoric acid. The organic / inorganic mixed proton exchange membrane has excellent water-retaining property, excellent mechanical strength and excellent conductivity, and does not expand or deform easily in high-temperature water.

Description

technical field [0001] The invention relates to a proton exchange membrane, in particular to an organic-inorganic hybrid proton exchange membrane which can be operated in a high-temperature and low-humidity environment. Background technique [0002] A fuel cell (Fuel Cell, FC) is a power generation device that uses chemical energy to be directly converted into electrical energy. Compared with traditional power generation methods, fuel cells have low pollution, low noise, high energy density, and high energy conversion efficiency. The advantage is that it is a very future-looking clean energy, which can be applied in various fields such as portable electronic products, household power generation systems, transportation tools, military equipment, space industry, and small power generation systems. [0003] Various types of fuel cells have different application markets according to their operating principles and operating environments. The applications in mobile energy are main...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/02H01M2/16H01M8/1016
CPCY02E60/12Y02E60/50
Inventor 蔡丽端廖永宏陈仕文林俊男赖建铭黄秋萍张嵩骏
Owner IND TECH RES INST
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