The latest developments in capacitor batteries

The so-called supercapacitor, also known as an electrochemical capacitor, is an energy storage system that has become increasingly popular in recent years. It can be thought of as similar to a hybrid of a regular capacitor and a battery, but different from both. Just like a battery, an ultracapacitor has a positive and negative electrode separated by an electrolyte. However, unlike batteries, supercapacitors store energy electrostatically, like capacitors, rather than chemically, like batteries. In addition, supercapacitors also have the incomparable advantages of lithium batteries, such as its ability to store a large electric capacity in a very small volume; long cycle life, which can be repeatedly charged and discharged hundreds of thousands of times; short charging and discharging time; good ultra-low-temperature characteristics; and strong high-current discharge capability.

So it seems that ultracapacitors are the best way to serve as a power source for electric vehicles. After all, the size of the battery capacity directly affects the length of range and the development of electric vehicles, and the advantages of supercapacitors are fully in line with the definition of the perfect battery. And China's development of graphene-based supercapacitors has been at the forefront of the world.

China's graphene technology is the highest level in the world.

One: The graphene-based supercapacitor developed by Changzhou Cube Energy Technology Co. can realize 100% recycling and solve the pollution problem of the battery. More than one million times of safe charging and discharging has been realized, and the product's charging and discharging speed is twice that of similar products in the market. Meanwhile, it can work safely between minus 40 degrees Celsius and 70 degrees Celsius. On demand, the supercapacitors can be used in any parallel connection to increase the electric capacity.

Two: Scientists at the Shanghai Institute of Silicate have developed a high-performance supercapacitor electrode material -- nitrogen-doped ordered mesoporous graphene. The material has excellent electrochemical energy storage properties, can be used as an electric car "super battery": charging only 7 seconds, can range of 35 kilometers.

Three: Dongxu Optoelectronics' graphene lithium-ion battery, "Alken King," can be quickly recharged in less than 15 minutes at 5C, and can work in environments ranging from -30 to 80 degrees Celsius, with a cycle life of up to 3,500 cycles. Previously tested, "King" charging time of less than 15 minutes, only 1/24 of the ordinary charging products.

Four: China CSR Zhuzhou Electric Locomotive Company Limited independent research and development of a new generation of high-power graphene supercapacitor was launched. CSR Zhuzhou Electric Locomotive Co., Ltd. the world's first supercapacitor 100% low-floor tram, which uses 7500F double layer supercapacitor, life expectancy of up to 10 years, charging and discharging up to 1 million times. The train can be quickly charged every time it enters the station, with a maximum charging time of 30 seconds, and the fastest charging can be completed in 10 seconds. Representing the world's current supercapacitor monomer technology at the highest level.

But everything has its pros and cons, and at present, we want to use supercapacitors to replace lithium batteries in general or can not be done, because the current production of supercapacitors in the technology is not complete, high production costs. Another point is that it is not heat-resistant, can not be placed in a humid environment, otherwise it will affect the normal work, and even damage the battery. However, we believe that in the near future, we will overcome the shortcomings brought about by supercapacitors, when the power battery of new energy vehicles will have a new breakthrough.