Rechargeable batteries have attracted great attention and attention due to their high energy density, long cycle life, and wide operating temperature range. The average price of each cycle battery is not high. The advantages and characteristics of lithium-ion batteries. Compared with other high-energy secondary batteries (such as ni-cd batteries, ni-mh batteries, etc.), lithium batteries have obvious characteristics. (1) High working voltage. Replacing lithium metal with carbon-based compounds (such as high-purity graphite or petroleum coke) can lower the battery voltage. But because they have low lithium-ion batteries, they minimize operating voltage damage. In addition, choose suitable lithium-ion chemical materials as the rechargeable battery level, and choose a suitable lithium-ion battery electrolyte management system, so that the lithium-ion battery has a higher operating frequency (-4V), which is far beyond the solution management system. (2) Large specific capacity Although replacing lithium metal with carbon materials can reduce the specific capacity of raw materials, in order to ensure a certain cycle life of the battery, the negative lithium metal is generally more than three times, so that the specific capacity of lithium ions is relative to the specific capacity. The reduction is not too large, and the volume is not reduced. (3) High energy density

　　The high operating frequency and volume ratio determine the specific energy of secondary lithium. Compared with Ni-CD batteries and Ni-MH batteries, the secondary lithium ion ratio is the largest, and the prospects are broad.

　　(4) Good safety factor and long life cycle. The reason why lithium metal is used as the anode of a rechargeable battery is that the structure of a lithium battery is changed through multiple charges, resulting in a porous structure twin. As the temperature rises, lithium-ion batteries produce a strong chemical reaction. In order to prevent lithium metal from being stored in the rechargeable battery, the battery should be charged at operating voltage. During the entire process of battery charging, charging and discharging, there is no structural change in the intercalation and embedding on the anode and anodic oxidation of the lithium-ion battery. In 1989 and 1991, lithium ion was removed by the hazardous chemicals department of the British Department of Transport and iait (Internal Institute of Aviation and Transport). (5) The self-discharge rate is small, and the electrolyte management system of lithium-ion batteries uses lithium-ion batteries, and the lithium-ion embedded carbon raw material system is unstable. In the process of battery charging, the recovery of the lithium battery electrolyte will produce a solid electrolyte solution intermediate phase (SEI) in the carbon negative surface layer, making the lithium ion battery based on electronic equipment instead of electronic equipment, allowing different charging of active materials in the battery The state is relatively stable, so that the life of the lithium battery is low. (6) Elimination of zero pollution. Lithium-ion batteries do not contain toxic substances such as lead, blessing, mercury, etc. Because rechargeable batteries must be sealed, they emit very little steam in applications, rather than environmental pollution. The organic solvent used to dissolve the adhesive in the entire production and processing process can also be guaranteed to be fully purchased. Since 1995, large and medium-sized manufacturing companies have purchased lithium ion and its raw materials, such as metal material drilling and recycling systems, since 1995. In addition, in 1995, Sony’s lithium-ion rating reached the 014001 international air quality standard 71O(7). High current efficiency. Unlike all secondary batteries in the solution management system, lithium-ion batteries are not easy to generate steam during the charging process, and the current efficiency is close to 100%. .