Super-capacitor high-conductive active carbon electrode manufacturing method

Abstract

The invention discloses a super-capacitor high-conductive active carbon electrode manufacturing method. The method comprises the following steps of 1) manufacturing an oxidized grapheme / active carbon mixture: adding an active carbon raw material into an oxidized graphene solution, under an ultrasound condition, carrying out a reaction at a temperature of 80 DEG C to 100 DEG C for 1h to 10hs, after the reaction is ended, obtaining a mixture solution; 2) manufacturing a grapheme / active carbon electrode: adding the mixture solution obtained from the step 1 into a Teflon container, and then adding a catalyst, after sealing, carrying out the reactor at a temperature of 80 DEG C to 200 DEG C for 1h to 10 hs, after the reaction is ended, using distilled water to fully clean, and drying for 12 to 24 hs under the temperature of 80 to 100 DEG C to acquire a high-conductive active carbon electrode. The active carbon manufactured in the invention is dispersed in a grapheme three-dimensional network structure. A hydrothermal technology is used to manufacture and acquire an aerogel structure. A specific area of a composite material can be further increased and simultaneously an internal structure of a composite electrode material is improved. A hierarchical porous structure, where a macropore, a mesoporous and a micropore exist, is formed. Specific capacitance performance of an electrode material is further increased.

Description

Technical field [0001] The invention relates to the electrode field technology, in particular to a method for preparing a supercapacitor high-conductivity activated carbon electrode. Background technique [0002] Supercapacitors, also known as electrical double-layer capacitors (ElectricalDoule-LayerCapacitor), are a new type of energy storage device, which has the characteristics of short charging time, long service life, good temperature characteristics, energy saving and environmental protection. Super capacitors are widely used. Used as a power balance power supply for lifting devices, which can provide super-large current power; used as a vehicle start-up power source, its starting efficiency and reliability are higher than traditional batteries, and it can fully or partially replace traditional batteries; used as vehicle traction energy It can produce electric vehicles, replace traditional internal combustion engines, and transform existing trolleybuses. It can be used in ...

AI Technical Summary

Problems solved by technology

However, supercritical drying requires extreme environments such as high temperature and high pressure, which requires high equipment and high production costs, and the volume of carbon fiber cloth and graphite paper collectors does not contribute to the specific capacity.