Analysis of the basic structure of lithium batteries

The advantage of lithium battery is its high specific energy, which is currently the battery with the highest specific energy. In 1995, Sony successfully developed lithium batteries for electric bicycles. They are divided into two types: one is a high-energy lithium battery, and the other is a battery module with multiple cells connected in series, but its output The power is 2.7 times that of the highest energy type, making it a high-power lithium battery. Lithium ion is the lightest metal in the world. When forming a battery, its output voltage is nearly 4.2V. The positive active material of the lithium battery is lithium cobalt oxide, the negative active material is carbon, and the electrolyte contained in the battery and the separator membrane is a polymer electrolyte. In order to ensure the safety of the lithium battery pack and also meet the required performance, the following developments have been made for the lithium battery: (1) Change the negative electrode material carbon to graphite to make the discharge voltage more stable. (2) The manufacturing method of the negative plate is improved, so that the active material reaches a high packing density. (3) The type and concentration of the electrolyte are improved, so that it can inhibit the delamination of the thin aluminum sheet for a long time, and at the same time improve the performance of the battery. (4) Through the optimal ratio of polymer to solute ratio, the leakage resistance is improved. 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 post: Is 18650 Ni-MH battery better or 18650 Li-ion battery?