Preparation method and application of cobalt disulfide and carbon nano fiber composite material

Abstract

The invention relates to a preparation method and application of a cobalt disulfide and carbon nano fiber composite material. The preparation method comprises the following steps: firstly, preparing carbon nano fiber by using an electrostatic spinning method; by taking N-N dimethyl formamide (DMF) as a solvent, preparing a polyacrylonitrile spinning solution, uniformly stirring, sucking into an injector, and performing electrostatic spinning; cutting a white film obtained after spinning into long strips, and performing thermal treatment in a tubular furnace so as to obtain a black carbon fiber film; activating with concentrated nitric acid, adding cobalt nitrate hexahydrate and thioacetamide so as to obtain a solution, performing ultrasonic treatment, further transferring the solution into a reaction kettle, and performing hydrothermal reaction; after the reaction kettle is cooled after reaction, taking out the carbon fiber, respectively washing the carbon fiber with distilled water and ethanol for multiple times, and performing vacuum drying, thereby obtaining the cobalt disulfide and carbon nano fiber composite material. The cobalt disulfide and carbon nano fiber composite material is used as an electrode material of a supercapacitor, and properties of the supercapacitor can be tested.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanometer materials, and in particular relates to a preparation method and application of a cobalt disulfide and carbon nanofiber composite material. Background technique [0002] In recent years, the average global temperature has risen and fossil fuels have been increasingly depleted. Solving the problem of energy shortage has attracted widespread attention. Scholars have begun to look for alternative new energy sources. Solar energy and wind energy are efficient, green, environmentally friendly and renewable, but they are not stable. For example, solar energy cannot be generated at night, and wind energy is also uncertain. Solar energy and electric energy cannot be stored like fossil energy, so it is necessary to design a storage The energy system uses the stored energy. At present, the more common energy storage systems are batteries and electrostatic capacitors. Batteries have high energy...

AI Technical Summary

Problems solved by technology

Solar energy and wind energy are efficient, green, environmentally friendly and renewable, but they are not stable. For example, solar energy cannot be generated at night, and wind energy is also uncertain. Solar energy and electric energy cannot be stored like fossil energy, so it is necessary to design a storage Energy systems store and utilize energy

At present, the more common energy storage systems are batteries and electrostatic capacitors. Batteries have high energy density and large storage capacity, but the charge and discharge cycle is long and the power density is low; electrostatic capacitors have fast charge and discharge speeds and high power density, but low capacity density. small amount

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