As a new type of energy storage component between traditional capacitor and rechargeable battery with high capacity, fast charging speed and high reliability, that is super capacitor. Compared with other capacitors of the same volume and size, the electric capacity of super capacitor is much larger, reaching Farad level, and some complex circuit demands cannot be met by ordinary capacitors, so super capacitor is needed at this time. Supercapacitor can meet the need of complex circuit operation, and it is suitable for many kinds of circuits because of its low requirement on circuit structure, and it is used a lot in electronic products.
The fast charging and discharging speed of supercapacitor is due to its no chemical reaction during energy storage, no impedance generated by electrochemical reaction, simple and unobstructed charging and discharging line, which can directly transfer charge and store energy, and its high power density, which is quickly charged to 95% of rated capacity when charging.
Super capacitor can be charged and discharged hundreds of thousands of times, and the charging and discharging process does not produce the loss like a battery, so it can be used for a long time. The electric capacity of super capacitor is bigger than ordinary capacitor, but not as big as battery. The energy stored in battery is much higher than super capacitor in the same volume and size, and the endurance time is more powerful than battery, but the charging time of battery is long, and the charging temperature is too high, and it is easy to cause fire, and the use time is short, and the material wrapped in the battery will pollute the environment after it is scrapped, so the battery is not as good as super capacitor.
Supercapacitor has the advantages of large capacity, high power density, fast charging speed, 95% of rated capacity in a few seconds to minutes, green and pollution-free. Although the electric capacity and endurance time are not as good as batteries, with the continuous development and progress of science and technology, we believe that the shortage of endurance time and small capacity of super capacitors will be overcome, and super capacitors will replace batteries in the near future.
