Because super capacitor/ultra capacitor is a new type of product. Therefore, we have made different updates and adjustments in structure, material and performance. According to different content, we have different methods to classify Super capacitor/ultra capacitor. At present, the classification of super capacitor refers to the principle of capacitor, electrolyte and other two major elements. Each type of supercapacitor/ultra capacitor can be divided into different categories.
(1)Classification according to principle. According to different working principles, Super capacitor/ultra capacitor can be separated into two categories: double layer capacitor and pseudo capacitor/ultra capacitor. The electric double layer Super capacitor/ultra capacitor has been reprocessed on manufacturing materials, such as activated carbon electrode materials, electrodes made of activated carbon materials with high specific surface area, and carbon aerogel electrode materials, and gelatin is prepared by combining precursor materials, and then carbonized activated treatment is used as electrode. Pseudo-capacitor Super capacitor/ultra capacitor generally uses metal oxide electrode material and polymer electrode material. The former includes NiOx, MnO 2, V2O5, etc. as cathode materials, and activated carbon as cathode materials. The latter includes PPY, PTH, PAni, PAS, PFPT and other electrodes doped by P or N or P/N.
(2) According to electrolyte classification. Electrolyte is a type of compound with conductivity after dissolving in aqueous solution. The electrolytes in Super capacitor/ultra capacitor include water electrolyte and organic electrolyte. Water-based electrolytes are generally acidic, alkaline and neutral, and the composition of electrolytes with different characteristics is also different. For example, acidic electrolyte is composed of 36% H2SO4 aqueous solution, alkaline electrolyte is composed of strong alkali such as KOH and NaOH, etc. LiClO4-based lithium salt and teABF4-based quaternary ammonium salts are generally chosen as electrolytes in organic electrolytes. Solvents such as PC, ACN, GBL and THL can sometimes be added according to the needs of user. These have significantly improved the performance of Super capacitor/ultra capacitor.
According to the classification method of electrolyte for Super capacitor/ultra capacitor, it can also be classified in detail according to the peculiar state of electrolyte. For instance, according to the solid and liquid forms of electrolyte, it can be divided into solid electrolyte Super capacitor/ultra capacitor and liquid electrolyte Super capacitor/ultra capacitor.
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