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What is the structure of supercapacitor?

What is the structure of supercapacitor?

The details of supercapacitor structure depend on the application and use of supercapacitor. These materials may vary slightly due to the manufacturer or specific application requirements. The common feature of all supercapacitors is that they contain a positive electrode, a negative electrode, and a diaphragm between the two electrodes. The electrolyte fills the two pores separated by the two electrodes and the diaphragm.

The structure of supercapacitor is shown in the figure. It is composed of porous electrode material with high specific surface area, current collector, porous battery separator and electrolyte. The electrode material should be closely connected with the current collector to reduce the contact resistance; the separator should meet the conditions of high ionic conductivity and low electronic conductivity as possible, which are generally fiber structure electronic insulation materials, such as polypropylene membrane. The type of electrolyte is selected according to the properties of electrode materials.


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