A kind of composite biochar-based material, its preparation method and application

Abstract

This case involves a composite biochar-based material, its preparation method and application. The composite biochar-based material is made from natural biomass materials through carbonization-activation of pore-making-doped with nitrogen, wherein the nitrogen used in the process of doping The nitrogen doping agent is a modified graphene oxide / polyaniline composite material. The modified graphene oxide / polyaniline composite material in the present invention can better combine with biomass carbon, increase the amount of nitrogen doping; it is easy to enter the interior of plant fibers, and it is easier to create pores during high-temperature carbonization; it is prepared with reed flowers as precursors The composite biochar-based material realizes the effective utilization of biological waste resources, which not only creates new value, but also effectively reduces environmental pollution. The preparation process is simple and easy to operate; the electrode material prepared by using the composite biochar-based material has Good formability, electron transfer ability and porous structure, with excellent electrochemical performance, can be used in the field of supercapacitors.

Description

technical field [0001] The invention relates to the technical field of electrode material preparation, in particular to a composite biochar-based material, its preparation method and application. Background technique [0002] Porous biomass carbon material, as a new type of environmentally friendly material, has the advantages of abundant raw material sources, cheap and easy to obtain, large specific surface area and good electrochemical performance. It has broad application prospects in the fields of adsorption materials, lithium electronic batteries, lithium-sulfur batteries, fuel cells and supercapacitor electrode materials. Supercapacitors have the advantages of environmental protection, high specific capacitance, fast charging and discharging, large storage capacity, and long cycle life. They are widely used in industrial fields such as military and automobiles. [0003] At present, there have been studies on the use of natural products to prepare porous carbon materia...

AI Technical Summary

Problems solved by technology

[0003] At present, there have been studies on the use of natural products to prepare porous carbon materials. However, the electrochemical activity is low and it is not suitable as a supercapacitor electrode material. Research aspects have drawn attention

However, due to the π-π bond interaction between graphene sheets, graphene is extremely prone to agglomeration, making it difficult to exert its actual performance.

Images