What is the rationale for lithium-ion batteries?

Lithium-ion battery is a kind of secondary battery (rechargeable battery), which mainly depends on the movement of lithium ions between the positive electrode and the negative electrode. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes: when charging, Li+ deintercalates from the positive electrode, and the electrolyte is inserted into the negative electrode, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. The discharge of lithium-ion batteries relies on chemical redox reactions. When discharging, that is, when we use the battery to consume power, its positive electrode will insert lithium ions, and the negative electrode will drop lithium ions. The opposite is true when charging. The gains and losses of his ions will form a certain voltage, which makes the battery show power. In each cycle of charging and discharging, lithium ion (Li) acts as a carrier for electric energy. It moves back and forth from the positive electrode to the negative electrode to the positive electrode, which reacts chemically with the positive and negative materials, and converts chemical energy and electrical energy to each other. The transfer of charge is realized, which is the fundamental principle of lithium-ion batteries. Since electrolytes, isolation membranes, etc. are all electronic insulators, there is no back-and-forth movement of electrons between the positive and negative electrodes during this cycle. They only participate in the chemical reverberation of the electrodes. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: What is the difference between a lead-acid battery electric vehicle and a lithium-ion battery?