Boron carbonitride nanosheet as well as preparation method and application thereof

Abstract

The invention provides a boron carbonitride nanosheet as well as a preparation method and application thereof, the preparation method comprises the following steps: mixing a boron source, a carbon source and a nitrogen source, then stirring, drying and grinding to obtain an amorphous phase precursor, and then carrying out heat treatment, ball milling and purification. The boron carbonitride nanosheet disclosed by the invention can be applied to a supercapacitor electrode material, a heat-insulating and wave-absorbing material or a catalytic adsorption material; according to the preparation method disclosed by the invention, through ball-milling high-temperature heat treatment, the process of firstly dispersing and then separating out crystals in an aqueous solution or other solvents is omitted, so that the energy consumption of solvent evaporation is saved, and the production cost is reduced; and by optimizing the manufacturing process, the process of dissolving the raw materials in water or other solvents and then separating out is omitted, the solid raw materials are mixed and then placed in the planetary ball mill to be uniformly and finely mixed, the contact area of the raw materials is increased, the reaction is expanded, and therefore the reaction rate and the reaction degree are increased.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a boron carbonitride nanosheet and its preparation method and application. Background technique [0002] With the rapid development of electronic sensors, flexible displays, health monitors and wearable electronic devices, as well as the development of new energy vehicles and new weapons, wearable and energy storage devices with fast storage and release of energy are becoming more and more popular among researchers from all walks of life. focus on. Among a variety of energy storage devices, supercapacitors have the advantages of high specific power density, fast charge and discharge speed, and good cycle stability. They are considered to be very promising energy storage devices in future energy storage applications. Electrodes are the core of supercapacitors. device has been extensively studied. Two-dimensional materials are currently widely used materials, tw...

AI Technical Summary

Problems solved by technology

Two-dimensional BCN shows potential applications ranging from electronics to catalysis, however, the methods for preparing BCN are time-consuming and require high chemical vapor deposition equipment, etc., or are prepared by hydrothermal method, which consumes a lot of energy.

This method takes a long time and cannot be produced in large quantities. The production is troublesome, and the raw materials are required to be soluble in water, and the sources are not extensive.

[0005] Although BCN products can be prepared through the above documents, there are high operating temperatures, and the hydrothermal method in the literature is complicated and time-consuming. In general, the hydrothermal method requires a drying process, which consumes time and energy, resulting in Increased production cost, not suitable for industrialized production

Images