Preparation method and application of self-supporting flexible polyaniline supercapacitor material

Abstract

The invention belongs to the technical field of preparation of flexible self-supporting supercapacitors, and discloses a preparation method and application of a self-supporting flexible polyaniline supercapacitor material. The preparation method comprises the following steps: preparing a polyaniline conductive polymer from PVA, phytic acid and triaminobenzeneboronic acid serving as dopants and cross-linking agents through an oxidative polymerization reaction; preparing an electrode; dissolving sulfuric acid in water to prepare a sulfuric acid electrolyte with a concentration of 1 mol / L; and preparing the self-supporting flexible conductive polymer supercapacitor material. According to the invention, a three-dimensional cross-linked conductive polymer micro-nano structure is obtained by utilizing supramolecular doping, and the three-dimensional cross-linked conductive polymer micro-nano structure has good conductivity and specific surface area and has relatively good specific capacity;since PVA and triaminobenzeneboronic acid are added, the flexibility of polyaniline is greatly improved through covalent bonds, and flexibility and self-supporting are achieved; and by adjusting the conductivity and flexible performance, a current collector is not needed in design and preparation, weight is reduced, and the energy density of the whole device is improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of flexible self-supporting supercapacitors, in particular to a preparation method and application of a self-supporting flexible polyaniline supercapacitor material. Background technique [0002] With the development of science and technology, electronic technology is developing rapidly at a rapid rate, and the wearable performance of electronic devices has attracted people's attention. Flexible electronic devices must have sufficient energy storage devices as their energy guarantee. Compared with traditional capacitors, supercapacitors have a larger specific capacity, are highly adaptable to the working environment, and have a very long service life; compared with batteries, supercapacitors have higher specific power and are more environmentally friendly. The electrode is the most important structure in a supercapacitor, and it is required to have excellent electrochemical performance and go...

AI Technical Summary

Problems solved by technology

[0004] The difficulty in solving the above problems and defects is: for most electrode materials, there are problems of low electrical conductivity or poor mechanical properties, so it is inevitable to need a current collector, so if you want to remove the current collector, it requires a lot of active materials. High, not only good electrical conductivity but also good mechanical properties, very strict requirements on material design

Images