What is a lithium battery? How does it work?

What is a lithium battery and how does it work? In fact, according to the classic electrochemical naming rules, the name of the rechargeable battery should be positive first and negative, so the battery system should be named lithium oxide-graphite rechargeable battery. But you will find this name difficult to remember, because the process of charging and discharging is realized by the movement of lithium ions. The Japanese named it lithium battery, or lithium battery for short. Generally speaking, lithium batteries mainly include four parts: positive electrode, negative electrode, membrane and electrolyte. The cathode material is generally a layered compound rich in lithium. Currently, commonly used commercial cathode materials include lithium cobalt oxide (LiCoO2), lithium manganese oxide (LiMn2O4), lithium iron phosphate (LiFePO4) and ternary materials (limnxco1-x-yniyo2). Anode materials are mainly elements or compounds with lithium-intercalation potential, which can be roughly divided into carbon anode materials and non-carbon anode materials. The diaphragm is mainly used to prevent direct contact between the positive and negative poles, resulting in short circuits. Generally, it is non-conductive high-strength film polyolefin porous membrane, such as PP, PE, PP/PE, PP/PE/PP, which has a certain pore size and Porosity to ensure low resistance and high ionic conductivity. The electrolyte is the carrier for lithium ion transmission between the positive and negative electrodes of the battery. The commonly used electrolytes in the electrolyte are LiPF6, LiClO4, etc., and the important solvents are EC, DMC, PC, and ClMC. When a lithium battery is charged, lithium ions are separated from the lithium-rich layered compound of the positive electrode, and are embedded in the negative electrode material through the electrolyte and the membrane. At this time, the negative electrode becomes a lithium-rich state and a lithium-poor state. On the contrary, during the discharge process, Li+ first precipitates out of the cathode material, and then returns to the cathode through the electrolyte. At this time, electrons flow from the negative electrode to the positive electrode through the external circuit, thus realizing the conservation of charge during the entire charge and discharge process. Since lithium ions can be repeatedly inserted and removed from the positive and negative materials, lithium batteries can be recycled. In addition, if some graphite cathode materials are used instead of lithium metal, the appearance of lithium dendrites can be prevented, thereby improving the safety performance of lithium batteries. The following is the reaction equation when LiFeO4 is used as the cathode material of lithium battery and carbon is used as the cathode material: Statement: Some pictures and content of the articles published on this site are from the Internet. Precautions