Low-temperature proton exchange membrane and preparation method thereof

Abstract

The invention discloses a low-temperature proton exchange membrane and a preparation method thereof and belongs to the technical field of high polymer materials. The preparation method comprises the steps as follows: tetra[4-(4'-carboxylphenyl)phenyl]ethylene, diallyl disulfide, carboxylated fullerene, an emulsifier and a photoinitiator are mixed, the obtained mixture is dropped on a glass plate and irradiated under a 220-230 nm ultraviolet lamp in a niotrgen or inert gas atmosphere for 40-50 min to be subjected to a polymerization reaction, and the low-temperature proton exchange membrane isobtained. The invention also discloses the low-temperature proton exchange membrane prepared with the preparation method. The low-temperature proton exchange membrane is low in price, high in proton conductivity and excellent in mechanical performance and water absorption and retention performance.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a fuel cell component, in particular to a low-temperature proton exchange membrane and a preparation method thereof. Background technique [0002] The proton exchange membrane is the "heart" part of the proton exchange membrane fuel cell. The double action of the proton. [0003] At present, the most widely used proton exchange membrane is the perfluorosulfonic acid polymer membrane represented by the Nafion membrane produced by DuPont. This type of proton exchange membrane has excellent thermodynamic and chemical stability, and has Higher proton conductivity, however, they have disadvantages such as high cost, high methanol permeation, etc., which hinder the further application of this type of proton exchange membranes. As an improvement, some modified Nafion membranes and new structural polymer membranes have been reported in the prior art. Such membranes more or less...

AI Technical Summary

Problems solved by technology

[0003] At present, the most widely used proton exchange membrane is the perfluorosulfonic acid polymer membrane represented by the Nafion membrane produced by DuPont. This type of proton exchange membrane has excellent thermodynamic and chemical stability, and has Higher proton conductivity, however, they have disadvantages such as high cost, high methanol permeation, etc., which hinder the further application of this type of proton exchange membranes

As an improvement, some modified Nafion membranes and new structural polymer membranes have been reported in the prior art. These membranes have more or less swelling degrees under wet conditions, mechanical properties cannot be guaranteed, and water absorption and retention properties are weak. Cons of still being expensive

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