The crust has about 0.0065% lithium contents, sea water contains large amounts of lithium, and the body of a normal adult weighing 70kg has a lithium content of about 2.2mg. At present, about 140 types of lithium ore are found in nature: in human bodies, animals and other organisms, soil and mineral water, cocoa, tobacco, algae, etc. Lithium is a soft, silver gray, highly reactive alkali metal, easily oxidized in air, so it must be stored in gasoline, kerosene or an inert gas. Lithium can react with water and acid, and then release hydrogen; it can easily combine with oxygen, nitrogen and sulfur. The sources of lithium can be divided into two major catalogues: minerals and natural salt/ lake brine, wherein the former refers to spodumene, lepidolite, petalite and others. In addition, the lithium derived from minerals accounts for....