Analysis of global supercapacitor market size and development prospects

Supercapacitor (ultracapacitor), also called Electrochemcial Capacitor (EC), gold capacitor, Fala capacitor, including double layer capacitor (Electrostatic double-layer capacitor) and pseudo capacitor (Electrochemical pseudocapacitor), to store energy through polarization electrolytes. . It is an electrochemical element, but it does not have a chemical reaction in its energy storage process, which is reversible because the supercapacitor can repeatedly charge and discharge hundreds of thousands of times.

The supercapacitor can be considered as two non reactive porous electrode plates suspended in the electrolyte, adding electricity on the plate, the positive plate attracts the negative ions in the electrolyte, and the negative plate attracts the positive ions. In fact, it forms two capacitive storage layers, and the positive ions are separated from the negative plate, and the negative ions are attached to the positive plate. Near.

Supercapacitor is a new capacitor based on the theory of interface double electric layer proposed by German physicist Helmholtz (1821~1894). As we all know, the surface charges on the metal electrodes in the electrolyte solution will have opposite charges on the two sides of the liquid surface, resulting in the potential difference between the phases. Then, if two electrodes are inserted at the same time in the electrolyte and a voltage that is less than the voltage of the electrolyte solution is applied at the same time, the positive and negative ions in the electrolyte will move rapidly to the two poles under the action of the electric field and form a close charge layer on the surface of the two electrode, that is, the double layer.

Supercapacitor, with its high capacity, high power, long life, low cost and friendly environment, can partly or completely replace traditional chemical batteries, and has a wider use than traditional chemical batteries. The development of ultracapacitor technology has promoted its application range from the initial electronic equipment field to the power field and energy storage field.

As a product, supercapacitor has become mature, and its application range is expanding. It has been widely used in industry, consumer electronics, communication, medical equipment, national defense, military equipment, transportation and other fields. Supercapacitors show unique advantages from the special energy storage of small capacity to large power storage energy, from a single energy storage to a mixed storage of batteries or fuel cells. The United States, Europe, Japan, Korea and other developed countries and regions have made fruitful research on the application of supercapacitors.