Two conductors in close proximity to each other, with a layer of non-conductive insulating medium between them, make up a capacitor. When a voltage is added between the two poles of a capacitor, the capacitor stores an electric charge. Capacitors play an important role in circuits such as tuning, bypassing, coupling, and filtering. Supercapacitor, also known as double layer capacitor and electrochemical capacitor, is a new type of electrochemical energy storage device with electrochemical performance between traditional capacitors and batteries. It mainly consists of four parts: electrode, electrolyte, collector and isolator. It mainly stores energy through double layer capacitance and Faraday quasi-capacitance produced by redox reaction. Generally speaking, the energy storage method of supercapacitor is reversible, so it can be used to solve the problems such as battery memory. The copper foil for capacitors produced by CIVEN METAL is the ideal material for high-end capacitors, which features high purity, good extension, flat surface, high precision and small tolerance.Copper Foil High-precision RA Copper Foil Adhesive Copper Foil Tape [HTE] High Elongation ED Copper Foil *Note: All the above products can be found in other categories of our website, and customers can choose according to the actual application requirements. If you need a professional guide, please contact with us.High purity, good extension, flat surface, high precision and small tolerance.