Methods for manufacturing electrode and energy storage device, and energy storage device

Abstract

The invention discloses a method for manufacturing an electrode. The method comprises the following steps of: 1, dry-mixing active carbon which serves as an active substance, conductive carbon black or conductive graphite or a mixture of the conductive carbon black and the conductive graphite, which serves as a conductive agent, and polytetrafluoroethylene (PTFE) dispersion resin which serves as an adhesive, in a mixer; 2, internally mixing the mixed material in an internal mixer; 3, repeatedly putting the internally mixed material into an open mill; 4, putting the material subjected to open milling into a roller press, and rolling the material to form a self-supporting diaphragm; and 5, coating a conductive adhesive on an aluminum foil current collector, adhering the aluminum foil current collector to the self-supporting diaphragm before the conductive adhesive is not dried, and drying to obtain the electrode. The invention also discloses an electric energy storage device, in particular a method for manufacturing the electric energy storage device. An electrode slice has the characteristics of high compaction density, high capacity, low internal resistance and longer service life. The prepared energy storage device has similar characteristics. In a manufacturing process of the electrode slice, water or solvent is not added, so environmental pollution is reduced, and energy is saved.

Description

technical field [0001] The invention relates to a method for manufacturing an electrode, and also relates to a method for manufacturing an electric energy storage device, which belongs to the field of manufacturing electric energy storage devices. Background technique [0002] Generally, electric energy storage devices include batteries and capacitors. [0003] A supercapacitor is an energy storage device between an electrolytic capacitor and a secondary battery. The charge storage of a supercapacitor occurs on the electric double layer formed by electrodes and electrolytes, as well as underpotential deposition, electrochemical adsorption, desorption and oxidation on the electrode surface. Migration of charge generated by reduction. Its capacity is 20 to 200 times that of traditional capacitors, up to farad level or even thousand farad level, and its specific power is more than 10 times that of batteries. It has the characteristics of fast speed, no pollution to the enviro...

AI Technical Summary

Problems solved by technology

The adhesives SBR and LA132 used in the general coating method decrease the bonding performance above 150°C, so the baking temperature is below 150°C, which results in a longer baking time and insufficient moisture removal.

Due to the addition of a large amount of water or other solvents during the production of pole pieces, a large amount of energy is consumed during the baking process and causes environmental pollution

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