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Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
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release time:2024-05-28 Hits: Popular:AG11 battery
Supercapacitors are capacitors that utilize the double layer principle. When the applied voltage is applied to the two plates of the supercapacitor
When on, like ordinary capacitors, the positive electrode of the electrode plate stores positive charges, while the negative electrode plate stores negative charges
Under the action of the electric field generated by the charges on the bipolar plates of a capacitor, a phase is formed at the interface between the electrolyte and the electrode
The reverse charge is used to balance the internal electric field of the electrolyte, and this positive and negative charge are connected between two different phases
On the contact surface, there is an extremely short gap between positive and negative charges arranged in opposite positions, and this charge distribution layer is called a double layer
The electrical layer, therefore, has a very large capacitance. When the potential between the two plates is lower than the oxidation-reduction electrode potential of the electrolyte,
The charge on the electrolyte interface will not detach from the electrolyte, and the supercapacitor is in normal working condition (usually 3V)
If the voltage at both ends of the capacitor exceeds the oxidation-reduction electrode potential of the electrolyte, the electrolyte will decompose
Abnormal state. Due to the discharge of the supercapacitor, the charges on the positive and negative plates are discharged by the external circuit, and the charges on the interface of the electrolyte are correspondingly reduced. From this, it can be seen that the charging and discharging process of supercapacitors is always a physical process without any chemical reactions. Therefore, the performance is stable and different from batteries that utilize chemical reactions.
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