What are the USES the super capacitor

Source: 2020 - 04 - 03 'hits: super capacitor's capacity is much bigger than traditional capacitor. Because of its large capacity, external performance is the same as the battery, so it is also called 'capacity batteries' or' gold batteries. Ultracapacitors battery also belongs to the electric double layer capacitors, is now the world has go into mass production of electric double layer capacitor capacity in one of the largest. Its basic principle is the same as other electric double layer capacitors, is the use of porous activated carbon electrodes and the electrolyte of electric double layer structure for super capacitor. Electricity is stored in the traditional physical capacitor by vacuum ( 1) the relative dielectric constant Or dielectric material layer ( The relative dielectric constant) Separation of charge separation between two pieces of plate. The capacitance value is: C = A / 3. 6 d10 - 6 ( ) , including A plate area, d is the thickness of the dielectric. Stored energy is: E = C ( Δ V) 2/2, one for the capacitance C, & Delta; The voltage drop between V plate. Visible, if you want to gain greater capacity, store more energy, you must add a d or reduce the area of medium thickness, but scale space is limited, caused it to store electrical energy and store energy. Super capacitor porous electrode made of activated carbon materials, at the same time in the relatively porous carbon electrode between the electrolyte solution, when the applied voltage on both ends, relatively gathered electron-positron respectively and porous electrodes and the electrolyte solution of positive and negative ions due to electric field gathered in and the interface of the positive and negative plates respectively, form two collector layer, the equivalent of two capacitors in series, due to their high specific surface area activated carbon materials or higher (1200 m2 / g A) Electrode area is large, electrolyte and the interface between the porous electrode distance less than 1 nm ( Namely. , the minimum thickness d) , according to the formula can be seen in front of the capacitance of electric double layer capacitor than traditional physical capacitor value, the specific capacity can be increased 100 times, therefore, electric capacity of unit weight up to 100 f/g, resistance and capacitance can be maintained at a very low level, low carbon material cost, mature technology, etc. Therefore, can use a capacitor to store large amounts of electricity, in actual use, the output voltage or current can be improve by series or parallel. ( 1] ( 1) Fast charging, charging as long as a few seconds to a few minutes can reach more than 95% of the rated capacity; Now the largest lead acid batteries usually take hours to recharge. ( 2) Long cycle life, deep cycle count up to 500000 times, charging and discharging 20 times a day, continuous use of up to 68 years. Compared with lead-acid battery, its service life of 68 years, no 'memory effect. ( 3) Large discharge capacity, high energy conversion efficiency, little process loss and large current energy cycle efficiency & ge; 90%; ( 4) High power density, which may reach 300 w/w/kg to 5000 kg, equivalent to dozens of batteries; Normally only 200 w/kg, the lead-acid battery and super capacitor battery has grown to 10 kw/kg. ( 5) The composition of raw materials, production, use, storage and remove all no pollution, is an ideal green environmental protection power source; ( 6) Charge and discharge circuit is simple, without charging circuit, such as rechargeable batteries, high safety coefficient, the long-term use of free maintenance; ( 7) Have good cryogenic properties, using the environment temperature range can be up to - 40℃~ +70℃; ( 8) Convenient detection, remaining power can directly read; ( 9) Single capacity is in commonly 0. 1 f to 3400 f.