Method for preparing high-voltage-resistant electrode material from porous carbon polyaniline

Abstract

The invention discloses a method for preparing a high-voltage-resistant electrode material from porous carbon polyaniline. The method comprises the steps of preparing hydroxylated porous carbon, preparing a hydroxylated porous carbon / polyaniline composite material, preparing an electrode plate and carrying out an electrochemical performance test. The preparation method has the beneficial effects that wheat flour is used as a carbon source, potassium hydroxide (KOH) and urea are used as raw materials, wherein the potassium hydroxide is used as an activating agent, nitrogen-doped hydroxylated porous carbon obtained through a high-temperature carbonization-acid treatment method is used as a precursor, and then the hydroxylated porous carbon / polyaniline composite material is prepared through an in-situ polymerization method; the polyaniline-coated hydroxylated porous carbon composite material prepared by the invention has the advantages of excellent conductivity, large specific surface area and stable physical and chemical properties, and can be used as an electrode material of a water system supercapacitor with an ultrahigh voltage window.

Description

technical field [0001] The invention relates to a method for preparing a high-voltage resistant electrode material, in particular to a method for preparing a high-voltage resistant electrode material by using porous carbon polyaniline, and belongs to the technical field of supercapacitor manufacturing. Background technique [0002] In recent years, with the increasing living standards of people and the dependence of industrial development on oil, the problem of declining global oil reserves and global warming has become more and more prominent. It is very important to seek a clean and renewable new energy or technology. In order to cope with the energy crisis and environmental degradation, scientists have paid extensive attention to and developed primary energy sources such as solar energy, tidal energy, and geothermal energy, and secondary energy sources such as electrochemical energy. Lithium-ion batteries, traditional capacitors and supercapacitors are commonly used elect...

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Problems solved by technology

[0003] At present, the low energy density of supercapacitors is the biggest shortcoming that limits its development and application. Therefore, it has become a research difficulty to increase the energy density without losing power density.

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