A kind of preparation technology of carbon-based supercapacitor

Abstract

The invention relates to the technical field of capacitor preparation, in particular to a preparation process of a carbon-based supercapacitor. Aiming at the shortcomings in the prior art that the mass of the electrode sheet is high and the service life is affected. The preparation process adopted in the present invention obtains a supercapacitor through a composite material composed of carbon and manganese dioxide, sequentially undergoing current collector pretreatment, pulping, mixing, coating, drying, and cutting into pieces, including the preparation of electrode sheets and the preparation of electrode materials. Preparation, after the preparation of the electrode sheets and electrode materials, materials such as diaphragms and battery shells are prepared, and the capacitors are assembled according to conventional processes.

Description

technical field [0001] The invention relates to the technical field of capacitor preparation, in particular to a preparation process of a carbon-based supercapacitor. Background technique [0002] As a new type of energy storage element, supercapacitors can effectively bridge the gap between traditional capacitors and batteries due to their advantages such as long cycle life, good reversibility, high energy density and power density. In view of its many performance advantages, supercapacitors can be widely used in many fields such as automobile industry, aerospace, information technology, electronics industry, national defense technology, etc., and are the core products of low-carbon economy. [0003] Electrode materials are the key factors determining the performance of supercapacitors. Porous carbon materials have the advantages of low price, good electrochemical stability, large specific surface area and pore capacity, and are the preferred electrode materials for superc...

AI Technical Summary

Problems solved by technology

The problems in this carbon-based supercapacitor are: 1. Since the electrode materials all need metal current collectors to coat the electrode materials, it is necessary to use adhesives and dispersants to adhere the electrode materials to the current collectors, which reduces the quality of the electrode sheets. 2. Since the composition of the current collector is copper or aluminum, the performance of the supercapacitor will be continuously reduced due to the continuous corrosion of the current collector in the electrolyte. At the same time, due to the existence of adhesives, the cycle life of the supercapacitor and the Performance will be significantly reduced during use

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