How to use Electric Double Layer Capacitors Technical Note
●Basic Mechanism:
Conventional capacitors have a dielectric sandwiched between two electrodes. When a voltage is applied, dipoles are oriented, and thus electric charge is stored. Electric double layer capacitors have electric charges oriented at the boundary of electrolyte and electrodes in what is called the “electric double layer” (see Fig-1).
●Structure:
Electric double layer capacitors are constructed of ①the electrode assembly (separator between electrode, which consist of aluminum foil and activated carbon, in a rolled configuration then impregnated with electrolyte), ②aluminum tabs (connected to each electrode), ③sealing plate and aluminum case (to contain them) (see Fig-2). Nippon Chemi-Con produces cylindrical capacitors. The rolled structure of the cylindrical type is the same as that of our aluminum electrolytic capacitors. This structure has high mass productivity because construction material or production technology of aluminum capacitors can be applied.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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Dec. 1st, 2020 |
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1.5 MB |
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