A method for continuous printing to prepare supercapacitors

Abstract

The invention discloses a method for preparing a supercapacitor through continuous printing, wherein an electrode material, a diaphragm and an electrolyte solution are continuously deposited on the surface of a substrate according to a certain sequence through a printing method to form supercapacitors with different structures, the electrode material is a carbon material, a conductive macromolecule, metallic oxide or the like; the diaphragm is nonconductive nanofiber; the electrolyte solution is a quasi-solid polymer electrolyte; the sizes, the shapes and the integration modes of the electrode material and the diaphragm of the supercapacitor are achieved by designing the shape of a baffle plate; the integrated substrate of the supercapacitor is made of plastic, paper, glass, cloth and the like. The method has the advantages that the preparation method is simple, the designability is strong, the applicability is wide, the prepared supercapacitor is light and thin, has an excellent electrochemical performance, has a broad application prospect in the fields of integration circuits, flexible wearable electronic devices, green energies, aerospace, defense-related science and technology and the like, and is expected to achieve industrialized production.

Description

technical field [0001] The invention belongs to the field of electrochemistry, in particular to a method for preparing supercapacitors by continuous printing. Background technique [0002] With the rapid development of social economy and the gradual deterioration of the ecological environment, human beings are facing a serious problem of energy shortage, and new energy sources have attracted increasing attention. Therefore, the design of novel electrochemical energy storage devices is a hot issue in the current scientific field. At present, there are two types of electrochemical energy storage devices: one is batteries, which store electrical energy in the form of potentially usable chemical energy, have high energy density, and are widely used, but their discharge power is limited, and batteries with high power output are required The other type is electrostatic capacitors, which store electrical energy by placing positive and negative charges between different plates of t...

AI Technical Summary

Problems solved by technology

At present, the most common supercapacitor is a supercapacitor with a sandwich structure. Its composition process is to lay a thin film of the prepared electrode material on the substrate, and then place the electrode materials of two supercapacitors symmetrically on the commercial separator. On both sides of the supercapacitor, drop the electrolyte to complete the assembly of the supercapacitor, but this commonly used supercapacitor assembly method still has the following problems: 1) It is impossible to continuously integrate the various components of the supercapacitor in a large area, and cannot be integrated by the same method 2) The shape of the supercapacitor cannot be designed, and the integration of multiple supercapacitors in series or parallel cannot be completed by designing the electrode shape; 3) The substrates of supercapacitors are mostly planar, which cannot meet the needs of new flexible wearable electronics. Equipment requirements, and in order to meet the needs of different new electronic devices, supercapacitors often need to be integrated into substrates of different structures and materials

However, due to the limitations in the preparation of separators and electrolytes, the printing method can only be used to prepare electrodes for supercapacitors, and cannot realize the continuous preparation of various parts of supercapacitors on substrates with different structures and materials.

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