A kind of manufacturing method of high specific capacity supercapacitor

Abstract

The invention relates to a manufacturing method of a high specific capacity supercapacitor, which comprises: adding deionized water into a vacuum stirring tank, then adding battery-grade CMC, stirring and dissolving in a vacuum, and storing in a vacuum; weighing the CMC solution in a vacuum stirring tank, Add conductive agent, acetylene black, conductive graphite, graphene slurry, and accelerator into the vacuum stirring tank in sequence, and vacuumize after vacuum stirring for standby; take deionized water in the vacuum stirring tank, add PVA solution and modify High performance surface functionalized activated carbon material, vacuumize after vacuum stirring; add conductive slurry, activated carbon slurry and SBR solution into the vacuum stirring tank, filter after vacuum stirring; evenly coat the prepared slurry on the corroded aluminum foil On the surface, high-capacity supercapacitor pole pieces can be obtained after drying, rolling, slitting and stripping, and die-cutting. The invention has simple steps and convenient operation, can effectively improve the specific capacity of the supercapacitor and solve the problem of low specific energy of the supercapacitor.

Description

technical field [0001] The invention relates to the technical field of capacitor manufacturing, in particular to a method for manufacturing a high specific capacity supercapacitor. Background technique [0002] At present, the research on supercapacitors mainly focuses on the preparation of high-performance electrode materials. Because of all the factors affecting the performance of chemical batteries, the performance of electrode materials plays the most important role. exist Super capacitor Among the electrode materials, various carbon materials are most widely used. According to the principle of electric double layer, the electric double layer capacitance on the electrode surface is about 20μF / cm 2 . Theoretically, if the specific surface area is 2500m 2 / g activated carbon as electrode material, the available specific capacity is as high as 500F / g. This high theoretical value has led to great interest in carbon materials with high specific surface area. Therefore,...

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Problems solved by technology

[0014] In order to solve the problems of low specific energy (organic system) of the existing supercapacitor, cycle life capacity decay of the energy storage device, and weak charge absorption ability of the energy storage device, the present invention proposes chemical methods such as cleaning and metal loading of high-surface carbon materials. Modification means, and charge promoters such as titanium oxide and antimony-doped tin dioxide are added to the electrode material, and a method of preparing slurry in stages is used to invent a method for manufacturing a high specific capacity organic supercapacitor

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