Russia may develop energy storage lithium ion battery 18650 price with long life and fast charging and discharging speed

　　According to reports, a group of researchers led by Professor Pavel Troshin of Russia's Skolkovo Institute of Science and Technology (Skoltech) studied coordination polymers. This type of compound has almost no application in metal-ion lithium ion battery 18650 price, but the researchers demonstrated the Polymers have high charge-discharge rates and high stability and can be used in future energy storage devices.

　　Charge and discharge rates are one of the key characteristics of lithium-ion lithium ion battery 18650 price. Most modern commercial energy storage lithium ion battery 18650 price take at least an hour to fully charge, severely limiting their application range, especially in electric vehicles. As the charging speed increases, the capacity of active materials such as graphite, the most commonly used anode material, will decrease significantly. In order to maintain a high level of battery capacity while maintaining a high charging rate, the active electrode material must have high electronic and ionic conductivity, and the newly discovered coordination polymer is composed of aromatic amines and transition metal salts such as nickel or copper. This requirement is met. Despite the promise of such compounds, researchers have yet to explore whether they could be used in lithium-ion lithium ion battery 18650 price.

　　Recently, the Skolkovo Institute of Science and Technology collaborated with a group of scientists from the Russian Institute of Chemical Physics, led by Professor P. Troshin, and the University of Cologne in Germany and the Ural Federal University in Russia, focusing on the study of nickel and copper linear systems based on tetraaminobenzene. polymer. Although the linear polymer exhibits lower initial electronic conductivity than its two-dimensional competitors, it can be used as an anode material to complete charge and discharge in less than a minute because it is doped with lithium. After the first discharge, its conductivity will increase sharply.

　　In addition, the researchers found that this type of anode material has good stability while having high charge and discharge rates. It can still retain up to 79% of its maximum capacity after up to 20,000 charge and discharge cycles.

　　Furthermore, the researchers found that copper-based polymers can be used as both anode and high-capacity cathode materials. The researchers note that although the cathode does not yet work in a stable manner, there are many opportunities for structural optimization. Roman Kapaev, a doctoral student at the Skolkovo Institute of Technology and first author of the study, said: "There are many ways to fine-tune the properties of this coordination polymer. In fact, we are dealing with a construction tool kit that can easily replace or change the polymer. The ingredients in the material can change both the structure of the amine and the transition metal cation, thereby increasing capacity, increasing or decreasing the redox potential, improving stability and various other properties."

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