Supercapacitor has excellent pulse charge discharge and large capacity energy storage performance. Its single capacity has reached ten thousand farad level, which is an energy storage element between electrostatic capacitor and battery. Farad capacitor The electric double layer supercapacitor is regarded as two inactive porous plates suspended in the electrolyte, and the voltage is loaded on the two plates. The potential added to the positive plate attracts the negative ions in the electrolyte, and the negative plate attracts the positive ions, thus forming a double electric layer capacitor on the surface of the two electrodes.
Fast charging speed. Supercapacitor charging is a physical process of double electric layer charging and discharging or a fast and reversible chemical process on the surface of electrode material. It can be charged with large current, and can complete the charging process in tens of seconds to several minutes. It is really a fast charging process.
The electrochemical reactions occurred during the charging and discharging process of supercapacitors have good reversibility, and it is not easy to see a series of life ending phenomena such as crystal transformation, shedding, dendrite penetration diaphragm and so on, similar to the active substances in batteries. The theoretical cycle life of carbon electrode capacitors is infinite, which can actually reach more than 100000 times, 10~100 times higher than that of batteries.
Super capacitor manufacturer The super capacitor has high charging and discharging efficiency, has a certain bearing capacity for overcharging and overdischarge, can stably charge and discharge repeatedly, and does not need maintenance in theory. Super capacitors do not use heavy metals and other harmful chemicals in the production process, and have a long life, so they are a new type of green power supply.
However, the installation position of supercapacitor is unreasonable, which easily causes electrolyte leakage and other problems, and destroys the structure and performance of the capacitor. Supercapacitors are limited to the use of DC circuits, because compared with aluminum electrolytic capacitors, supercapacitors have larger internal resistance and are not suitable for the operation requirements of AC circuits. From the physical point of view, supercapacitor has the characteristics of short charging time, long operation time, good temperature control effect, strong environmental protection performance, etc.
