Preparation method and application of eggshell membrane derived carbon/graphene/copper sulfide composite material

Abstract

The invention discloses a preparation method and application of an eggshell membrane derived carbon / graphene / copper sulfide composite material. The preparation method comprises the following steps: 1)treating eggshell membranes with acid, and cleaning the eggshell membranes with water and isopropanol; 2) loading graphene oxide on the treated eggshell membranes; 3) calcining and carbonizing the eggshell membranes loaded with the graphene oxide in inert gas; and 4) adding a calcined eggshell membrane derived carbon / graphene oxide compound into an ethylene glycol solution containing copper nitrate and a sulfur-containing compound, and preparing the eggshell membrane derived carbon / graphene / copper sulfide composite material by utilizing a solvothermal reaction. The eggshell membranes with a three-dimensional porous structure can effectively load graphene and copper sulfide, aggregation of graphene and copper sulfide is reduced, and the obtained composite material can be cut into any shapeand directly used as an electrode material of a supercapacitor and has good capacitance performance; and the preparation method is simple in process, easy for large-scale production and good in application prospects.

Description

technical field [0001] The invention belongs to the field of new materials and functional materials, and relates to a preparation method and application of an eggshell membrane derived carbon / graphene / copper sulfide composite material. Background technique [0002] Supercapacitors have both large electrochemical capacity and high power density and power density, so they have extremely important application prospects in new energy vehicles, aerospace, and wearable devices. The performance of supercapacitors mainly depends on the electrode materials, which are mainly various carbon materials, metal compounds and organic conductive polymer materials. However, electrode materials with individual components have some disadvantages, which are not conducive to obtaining high-performance supercapacitors. Moreover, these electrode materials are usually in powder form, and the obtained electrode materials should be mixed with binder, carbon black, dispersant, etc. according to a cert...

AI Technical Summary

Problems solved by technology

When tetrabutyl titanate and eggshell membrane were calcined together at high temperature, the decomposition of biomass inside the eggshell membrane had an impact on the reaction of tetrabutyl titanate to titanium dioxide, and the eggshell membrane-derived carbon obtained after calcining eggshell membrane alone General electrical conductivity, can only be used as a photocatalyst