Preparation method of pyrrole-o-toluidine copolymer with porous structure

Abstract

The invention discloses a preparation method of a pyrrole-o-toluidine copolymer with a porous structure. The preparation method of the pyrrole-o-toluidine copolymer with the porous structure comprises the following steps: 1, dissolving pyrrole and o-toluidine in an organic solvent to form an organic phase; 2, dissolving ammonium persulfate and low-carbon alcohol in water to form a water phase; 3, mixing the organic phase with the water phase, then standing and reacting; 4, filtering, then vacuum drying to obtain the pyrrole-o-toluidine copolymer. The method is simple and practicable, is mild in reaction conditions, simple in composition of a reaction system and free of additional templates, can be used for preparing the polymer of a loose and porous structure by only relying on the easily-removed low-carbon alcohol, and is pure in product, simple and convenient in post-treatment, low in cost and low in requirement on equipment performance; the obtained product presents the loose and porous structure, has high specific capacity, energy density, power density and high cycling stability, is especially suitable for being applied to supercapacitor electrode materials, and can also be applied to the field of sensing, catalysis and heavy metal ion adsorption materials.

Description

technical field [0001] The invention belongs to the technical field of preparation of conductive polymer-based supercapacitor electrode materials, and in particular relates to a preparation method of a porous structure pyrrole-o-methylaniline copolymer. Background technique [0002] Conductive polymer materials have many advantages such as low cost, less environmental pollution, high charge density, wide potential window, and adjustable redox activity. They have great potential application value in the field of electrochemical supercapacitors, so they have attracted widespread attention. Polypyrrole has become the most attractive electrode material for supercapacitors or batteries among conductive polymers due to its better flexibility in electrochemical processes. However, the doping / dedoping (redox) properties of conducting polymers during the electrochemical process cause their volume to expand and contract repeatedly, often leading to mechanical degradation of the materi...

AI Technical Summary

Problems solved by technology

The traditional method to achieve this approach is to use template method (hard template or soft template) to control polymerization to obtain polypyrrole with nano / porous structure, but the final template needs to be removed from the material, resulting in complicated post-treatment process and residual template will make the material performance degradation

[0003] At present, the polypyrrole energy storage (electrode) materials with special structure prepared by interfacial polymerization still rely on more surfactants (1. LeiW., HeP., WangY., etal. Electrochim. Acta2014, 132, 112; 2 .YangQ.H., HouZ.Z., HuangT.Z.J.Appl.Polym.Sci.2015, 132, 41615.), ionic liquids (1.HouL., YuanC., LiD., etal.Electrochim.Acta2011, 56, 6049; 2. The assistance of Chinese patent, CN201110418753) or electrochemical means (Chinese patent, CN201010560901), resulting in complex preparation process, cumbersome post-treatment process, relatively high cost, and the pure polypyrrole material is limited by its own performance and it is difficult to further Improve specific capacity and cycle stability

Images