Preparation method of novel sulfonated polyetheretherketone/sulfonated graphene oxide composite proton exchange membrane

Abstract

The invention discloses a preparation method of a novel sulfonated polyetheretherketone / sulfonated graphene oxide composite proton exchange membrane, and relates to the field of composite materials. SGO-C-triple bond-C is prepared; polyetheretherketone is dissilved in concentrated sulfuric acid to prepare sulfonated polyetheretherketone; SPEEK-CH2N3 is prepared through a chloromethylation reactionand an azidation reaction; SPEEK-SGO is prepared by a click chemical reaction of alkyne and azide under the catalysis of CuBr; and the SPEEK-SGO composite membrane is prepared by a solution casting blending phase transformation process in order to achieve the preparation and modification of the sulfonated polyetheretherketone membrane. The composite proton exchange membrane improves the proton conductivity, the coulombic efficiency and the power density of polymer membranes in fuel cells, and can be applied to the field of chemical industry.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a preparation method of a novel sulfonated polyether ether ketone / sulfonated graphene oxide composite proton exchange membrane. Background technique [0002] At present, the proton exchange membrane is an important component of the fuel cell. The proton conductivity, water absorption rate and oxygen absorption performance of the fuel cell membrane play a key role in the performance of the entire fuel cell. As the core component of the fuel cell - the proton of the fuel cell The exchange membrane has attracted extensive attention and vigorous research and innovation from insiders and scholars. Due to the excellent performance and relatively low price of the sulfonated PEEK membrane, the modified sulfonated PEEK membrane occupies an important position in the use of commercial composite membranes. Guo Qiang reported "P-aminobenzenesulfonic acid graphene oxide doped sulf...

AI Technical Summary

Problems solved by technology

However, most of the methods for preparing composite membrane materials by modifying graphene at present are mostly mechanical blending methods, so that the two are mixed and cast in a certain ratio, and the properties of the prepared membrane materials will be different due to the combination of material molecules. Different degrees of defects appear, such as membrane proton conductivity, low Coulombic efficiency

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