Development Prospect of High Temperature Super Capacitor

Working characteristics: high temperature super capacitor is a capacitor based on double-layer principle. When the applied voltage is applied to the two plates of the high temperature super capacitor, the positive electrode of the high temperature super capacitor stores a positive charge, while the negative electrode stores negative charge. Under the electric field generated by the charge on the two plates of the high temperature super capacitor, the positive electrode forms on the interface between the electrolyte and the electrode. The opposite charge balances the internal electric field in the electrolyte. On the contact surface between two different phases, the positive charge and the negative charge are arranged in the opposite position by a very short gap between the positive charge and the negative charge. This charge distribution layer is called a double-layer, so the capacitance is very large. When the potential between the two plates is lower than the redox electrode potential of the electrolyte, the charge on the interface of the electrolyte will not detach from the electrolyte. The high temperature capacitors work normally (usually below 3V). If the voltage at both ends of the capacitor exceeds the redox electrode potential of the electrolyte, the electrolyte will be decomposed into an abnormal state. State. On the discharge of high temperature super capacitor, the charge on the positive and negative plates is released by the external circuit, and the charge response on the interface of the electrolyte decreases. It can be seen that the charging and discharging process of high temperature super capacitor is always a physical process without chemical reaction. Therefore, the performance is stable, which is different from that of batteries using chemical reactions.

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