Manufacturing method of continuous electrospinning flexible ultra-thin super capacitor

Abstract

The invention discloses a manufacturing method of a continuous electrospinning flexible ultra-thin super capacitor. The method comprises the following steps of weighing graphene, a carbon nanotube anda solvent according to a proportion, and through ultrasonic dispersion, manufacturing a graphene / carbon nanotube colloidal solution; using a high-voltage electrostatic spraying device to spray a graphene / carbon nanotube composite film cathode on a current collector; according to the proportion, manufacturing a solid electrolyte material, and using a high voltage electrostatic spinning device to directly and electrically spin a solid electrolyte film on the formed cathode; using a prepared spinning solution to electrically spin one layer of anode on the formed electrolyte film; and finally attaching to one layer of current collector so as to acquire a super capacitor. The method has advantages that the electrospinning anode and cathode are a three-dimensional structure composed by a one-dimensional carbon pipe and two-dimensional graphene and possess good conductivity; contact performance of the electrospinning solid electrolyte and the anode and cathode is good, and through regulatingand controlling a thickness, ion conductivity of the electrolyte film can be improved; and an anode and cathode film thickness can be adjusted from 10 microns so as to manufacture the super capacitors (0.2F-4F) with different capacities.

Description

technical field [0001] The invention relates to the technical field of electrochemistry, in particular to a method for preparing a continuous electrospinning flexible ultra-thin supercapacitor. Background technique [0002] As a simple and low-cost method, electrospinning or spraying is expected to be widely used in the large-scale preparation of nano energy storage materials and devices. Films prepared by electrospinning or spraying techniques usually have a flexible, thickness-controllable, self-supporting non-woven fabric-like structure. Moreover, this structure plays an important role in reducing the thickness of the active material, promoting the transmission of electrons in the electrode network, reducing the diffusion distance of electrolyte ions in the reaction energy storage process, and improving the utilization rate of the active material. [0003] Supercapacitors (also known as electrochemical capacitors), as a new type of energy storage device, have attracted m...

AI Technical Summary

Problems solved by technology

Most of the currently used supercapacitors use separate components such as current collectors, working electrodes, electrolytes, and diaphragms. The preparation process and process are complicated, the flexibility is poor, and the weight and volume are large.

When deformation such as folding or bending occurs, the relative movement of the components of the supercapacitor will greatly damage the device structure, resulting in poor performance of the supercapacitor and reduced cycle stability.

Images