Introduction to lithium battery

　　The traditional structure of lithium ion battery includes graphite anode, cathode composed of lithium ion metal oxide and electrolyte (lithium salt solution dissolved in organic solvent). The most common lithium-ion batteries use carbon as the anode, vinyl carbonate and dimethyl carbonate dissolved lithium hexafluorophosphate solution as the electrolyte, and lithium manganese dioxide as the cathode; It is light and strong, with large specific energy, and the unit voltage is about 3.7 V.

　　Compared with nickel metal hydride battery, lithium ion battery has relatively high working voltage and large specific energy, which is 3 times of that of nickel metal hydride battery. Lithium ion battery has small volume, light weight, long cycle life, low self discharge rate, no memory effect and no pollution; The range of single battery performance indicators is large, because there are many electrode combinations in lithium ion batteries, and they have certain differences in performance.

　　Lithium ion batteries can be divided into lithium ion batteries and lithium polymer batteries. The cathode materials of lithium ion battery mainly include lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, lithium iron phosphate, etc. The anode materials mainly include graphite, lithium titanate, etc.