Introduction of polymer lithium ion battery and classification

The positive and negative materials used in polymer lithium batteries are the same as liquid lithium, and the working principles of the batteries are basically the same. Their important difference lies in the difference in electrolytes. Lithium batteries use liquid electrolytes, while polymer lithium batteries are replaced by solid polymer electrolytes. This polymer can be dry or colloidal. Part of the polymer lithium battery using polymer gel electrolyte can be divided into three categories: 1. Solid polymer electrolyte lithium battery. The electrolyte is a mixture of polymer and salt. This battery has low ionic conductivity at room temperature and is suitable for high-temperature use. 2. Gel polymer electrolyte lithium battery. That is, additives such as plasticizers are added to the solid polymer electrolyte to increase the ionic conductivity and enable the battery to be used at room temperature. 3. Lithium battery with polymer cathode material. Using conductive polymer as the positive electrode material, its energy is three times that of existing lithium batteries, which is the latest generation of lithium batteries. Since solid electrolytes are used instead of liquid electrolytes, compared with liquid lithium batteries, polymer lithium batteries have the advantages of thinner, arbitrary area, and arbitrary shape, and there will be no safety problems such as liquid leakage, combustion and explosion. Therefore, the battery casing can be made of aluminum-plastic composite film, which can increase the capacity of the entire battery; polymer lithium batteries can also use polymer as the positive electrode material, and its mass specific energy will be more than 50% higher than that of current liquid lithium batteries. In addition, polymer lithium batteries have improved operating voltage and charge-discharge cycle life than lithium batteries. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Technical Analysis of Power Lithium Battery Pack Matching