Preparation method of flexible electrode of supercapacitor, flexible electrode and application thereof

Abstract

The invention relates to the field of super capacitor electrodes, in particular to a preparation method of a flexible electrode of a super capacitor, the flexible electrode and application of the flexible electrode. According to the technical scheme, the preparation method comprises the following steps: cleaning and drying a flexible carbon-based carrier; diluting a binder into a binder solution; stirring and mixing the activated carbon and the conductive carbon; mixing the mixed material with a binder solution; uniformly dispersing the mixture of the activated carbon and the conductive carbon in the binder solution; grinding the dispersed slurry to obtain electrode slurry; coating a flexible carbon-based carrier with the electrode slurry to form an electrode plate; baking the electrode plate; and finally, obtaining a baked finished product electrode plate. According to the technical scheme, the carbon fiber cloth serves as the current collector, the carbon fiber cloth has flexibility, the electrode piece made of the carbon fiber cloth can be bent, the material falling and edge breakage probability is low during bending, the service life of the super capacitor can be effectively prolonged, and capacitor internal short circuit caused by material falling and edge breakage is avoided.

Description

technical field [0001] The invention relates to the field of supercapacitive electrodes, in particular to a method for preparing a flexible electrode for a supercapacitor, the flexible electrode and its application. Background technique [0002] Supercapacitor is a new type of energy storage device. Its principle is based on porous carbon, conductive polymer, etc., and realizes energy storage by rapid charge and discharge at the electrode surface-electrolyte interface. The emergence of supercapacitors has filled the gap between traditional capacitors and batteries. In the future, multifunctional consumer electronics products will require novel functions and features such as thinner, lighter, more flexible, and transparent. Therefore, supercapacitors have a wide range of applications in many fields. The application prospects, including medical and health care, electric vehicles, mobile communications, military industry and other fields, have been highly valued by countries ...

AI Technical Summary

Problems solved by technology

[0008] The mainstream binder currently used is styrene-butadiene rubber + carboxymethyl cellulose, and the current collector used is corroded aluminum foil. The prepared pole piece will have the problem of material drop and chipping during the slitting process. On the one hand, it will reduce the life of the product, on the other hand may cause an internal short circuit of the supercapacitor

[0009] At present, the current collector for preparing pole pieces is corroded aluminum foil, which cannot be folded repeatedly. It can only be applied to supercapacitors with rigid structures, and cannot be applied to flexible supercapacitors.

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