Method for preparing nitrogenous graphitized hollow carbon microspheres

Abstract

The invention relates to a method for preparing nitrogenous graphitized hollow carbon microspheres, which relates to a method for preparing hollow carbon microspheres. The method disclosed by the invention aims to solve the technical problem that in the existing method for preparing nitrogenous graphitized hollow carbon microspheres, because a template agent is utilized, the preparation process is complicated, and the cost is increased. The method comprises the following steps: adding melamine powder and a formaldehyde solution into deionized water, and after heating for reaction, obtaining reaction liquid; then, transferring the reaction liquid into a reaction kettle, and after carrying out hydrothermal reaction on the reaction liquid, obtaining melamine resin microspheres; and putting the melamine resin microspheres into a quartz tube type furnace, and heating the melamine resin microspheres so as to split the melamine resin microspheres, thereby obtaining nitrogenous graphitized hollow carbon microspheres. The average diameter of the nitrogenous graphitized hollow carbon microspheres is 1-5 microns; and by using the method, no template agent and no catalyst are required to be added in the preparation process, the preparation process in a synthesis method is simple, the cost is low, and microspheres are easy to be performed mass production and can be used as electrode materials or carrier materials of active substances of electrodes in the fields of electrochemical super capacitors, lithium ion batteries, fuel cells and the like.

Description

technical field

[0001] The invention relates to a preparation method of hollow carbon microspheres. Background technique

[0002] Graphitized carbon hollow spheres have attracted extensive attention from researchers because of their low density, good stability, and fillable hollow structures. The special composition and microstructure of nitrogen-containing graphitized hollow carbon microspheres show good application prospects in many aspects such as new energy, biomedicine, and environmental pollution control. The existing methods for preparing nitrogen-containing graphitized hollow carbon microspheres all use template method to first synthesize resin microspheres, and then obtain the final product through thermal cracking. The introduction of the template not only complicates the preparation process and increases the preparation cost, but also easily causes environmental pollution in the subsequent process of removing the template. Therefore, it is particularly necessary...

Images