What is a lithium ion battery? Introduction to the working principle of lithium-ion batteries

What is a lithium ion battery? Lithium ion battery is actually called lithium in English. Lithium-ion battery is a kind of battery that uses lithium metal material or lithium alloy as negative electrode material and uses non-aqueous electrolyte solution safely. The important reason is that the chemical properties of lithium metal materials are very active, which promotes the production, processing, storage, and safe use of lithium metal materials, and the demand for the regional environment is very high. Therefore, lithium-ion batteries have not been used for a long time. With the rapid development of scientific research and technology over time, lithium-ion batteries have now become mainstream products. Lithium-ion batteries can generally include two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain lithium in the form of metallic materials and can be charged at the same time. The new product of rechargeable batteries, lithium metal batteries, came out in 1996, and its safety performance, specific volume, self-discharge rate and performance index price ratio are far higher than lithium-ion batteries. The working principle of lithium battery The working principle of lithium ion battery refers to the principle of charge and discharge. During the charging process, lithium ions will appear on the positive electrode of the battery, and the appearing lithium ions will enter the negative electrode through the electrolyte. Carbon as a negative electrode has a layered structure with many micropores. Lithium ions reaching the negative electrode are inserted into the micropores of the carbon. The more lithium ions are inserted, the greater the charging capacity. In the same way, when the battery is discharged (that is, when we use the battery), the lithium ions embedded in the carbon layer of the negative electrode are extracted and move back to the positive electrode. The greater the lithium ion reflux, the greater the discharge capacity. The capacity of the battery, we usually refer to the discharged capacity. During the charging and discharging process of lithium-ion batteries, it is difficult to see the movement of lithium ions from the positive, negative, and positive electrodes. If we visually compare a lithium-ion battery to a rocking chair, the two ends of the rocking chair are the poles of the battery, and the lithium-ion battery is like an excellent athlete running back and forth on both ends of the rocking chair. Therefore, experts named the lithium-ion battery as the rocking chair battery. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.