Overview of the characteristics of polymer lithium batteries

According to the different electrolyte materials used in lithium batteries, lithium batteries can be divided into two categories: liquid lithium batteries (lithiumion battery, referred to as LIB) and polymer lithium batteries (polymer lithiumion battery, referred to as LIP). The positive and negative materials used in polymer lithium batteries are the same as liquid lithium ions, and the working principle of the battery is 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 use of polymer gel electrolyte. Polymer lithium batteries can be divided into three categories: (1) Solid polymer electrolyte lithium batteries. 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 specific energy is three times that of the existing lithium battery, which is the latest generation of lithium battery. 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 specific capacity of the entire battery; polymer lithium batteries can also use polymer as the cathode material, and its mass specific energy will be more than 50% higher than the current liquid lithium battery . In addition, polymer lithium batteries are better than lithium batteries in terms of operating voltage and charge-discharge cycle life. Based on the above advantages, polymer lithium batteries are known as the next generation of lithium batteries. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Analysis of the four major advantages of lithium titanate batteries